what is the probability that we must survey at least 5 california residents until we find a california resident who does not have adequate earthquake supplies? (round your answer to four decimal places.)

The answer is $12.50

You can see on the graph that if the weight is 20 pounds, it will cost $10. We are looking for how much it will cost to ship a 25 pound package. It can’t be $20.00 either.

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Based on the sample data and the hypothesis test, there is sufficient evidence to support the claim that the population mean μ is greater than 29 at the significance level of 0.05.

What is the mean and standard deviation?

The standard deviation is a summary measure of the differences of each observation from the mean. If the differences themselves were added up, the positive would exactly balance the negative and so their sum would be zero. Consequently, the squares of the differences are added.

To test the claim about the population mean μ at the level of significance α, we can perform a one-sample t-test.

Given:

Claim: μ > 29 (right-tailed test)

α = 0.05

σ = 1.2 (population standard deviation)

Sample statistics: x = 29.3 (sample mean), n = 50 (sample size)

We can follow these steps to conduct the hypothesis test:

Step 1: Formulate the null and alternative hypotheses.

The null hypothesis (H₀): μ ≤ 29

The alternative hypothesis (Hₐ): μ > 29

Step 2: Determine the significance level.

The significance level α is given as 0.05. This represents the maximum probability of rejecting the null hypothesis when it is actually true.

Step 3: Calculate the test statistic.

For a one-sample t-test, the test statistic is given by:

t = (x - μ) / (σ / √(n))

In this case, x = 29.3, μ = 29, σ = 1.2, and n = 50. Plugging in the values, we get:

t = (29.3 - 29) / (1.2 / √(50))

= 0.3 / (1.2 / 7.07)

= 0.3 / 0.17

≈ 1.76

Step 4: Determine the critical value.

Since it is a right-tailed test, we need to find the critical value that corresponds to the given significance level α and the degrees of freedom (df = n - 1).

Looking up the critical value in a t-table with df = 49 and α = 0.05, we find the critical value to be approximately 1.684.

Step 5: Make a decision and interpret the results.

If the test statistic (t-value) is greater than the critical value, we reject the null hypothesis; otherwise, we fail to reject the null hypothesis.

In this case, the calculated t-value is approximately 1.76, which is greater than the critical value of 1.684. Therefore, we reject the null hypothesis.

hence, Based on the sample data and the hypothesis test, there is sufficient evidence to support the claim that the population mean μ is greater than 29 at the significance level of 0.05.

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The null hypothesis for this scenario is that the valve performs to the specifications, i.e., the mean pressure produced by the valve is 5.9 lbs/square inch. The alternative hypothesis is that the valve does not perform to the specifications, i.e., the mean pressure produced by the valve is not 5.9 lbs/square inch.

To determine if there is sufficient evidence to reject the null hypothesis, we need to perform a hypothesis test.

Since the sample size is greater than 30 and we know the population standard deviation, we can use a z-test. We can calculate the test statistic as:

z = (sample mean - population mean) / (population standard deviation / sqrt(sample size))

Plugging in the given values, we get:

z = (6.1 - 5.9) / (0.9 / sqrt(130)) = 2.33

Using a standard normal distribution table, we find that the probability of getting a z-value of 2.33 or greater is approximately 0.01.

Since this probability is less than the significance level of 0.05, we can reject the null hypothesis and conclude that there is sufficient evidence that the valve does not perform to the specifications.

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The cost of 10 cereal bars at the cheaper shop (i.e. at supermarket) = £7.5

We can observe that at corner shop, 5 cereal bars cost 4 pounds.

So, using unitary method, 1 cereal bar costs 5/4 = 0.8 pounds.

And at supermarket, 2 cereal bars cost 1.50 pounds.

so, using unitary method one cereal bar costs 1.5/2 = 0.75 pounds.

This means that supermarket is cheaper than the corner shop.

Now we need to finnd the cost of 10 cereal bars at the cheaper shop i.e., to find the cost of 10 cereal bars at supermarket.

Let us assume that the cost of 10  cereal bars is m pounds.

Using unitary method the cost of 10 cereal bars at supermarket would be:

x = (number of cereal bars) × (cost of each cereal bar)

x = 10 × 0.75

x = 7.5 pounds

Therefore, the cost of 10 cereal bars at the cheaper shop = £7.5

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Find the complete question below.

Karma wants to buy cereal bars from the corner shop or the super market. What is the cost of 10 cereal bars at the cheaper shop?

Answer:

  (c)  (-∞, -2) ∪ (-2, 1) ∪ (1, ∞)

Step-by-step explanation:

You want the domain of the given piecewise-defined function.

For x < 2, the function is ...

  \(g(x)=\dfrac{x^2+2x}{x^2+x-2}-\dfrac{x(x+2)}{(x-1)(x+2)}=\dfrac{x}{x-1}\quad x\ne\{-2,1\}\)

Both of these exclusions are in the region x < 2, so both must be excluded from the domain.

The log function is defined for all values x > -2, so there are no exclusions in this region.

The domain is (-∞, -2) ∪ (-2, 1) ∪ (1, ∞).

Answer:

x= 1.16 y=14 ...........

Answer:

x intercept= -1/2

y intercept= 4

Step-by-step explanation:

its easy, the answers are in the equation- y=−1/2x+4

Answer:

Explanation:

Answer:

A and B

Step-by-step explanation:

got question wrong, now know the answer

Therefore, The Coordinates of the THIRD VERTEX is:  ( 5, -3 )

        Calculate the midpoint of the given vertices:

        MidPoint = ( -5 + 5/2,  3 + 3/2 )

        MidPoint = ( 0, 3 )

        Distance = √( -5 -5 )^2 + ( 3 - 3 )^2

        Distance = √( -10 )^2  +  (0)^2

        Distance = √100

        Distance =  10

        Side Length =  10/√3

        Side Length = 10/1.7

        Side Length = 5.88

        Height = √3/2  *  Side Length

        Height  = 1.7/2  *  5.88

        Height  =  5

Since the origin lies inside the triangle, The Third Vertex will have a Positive  X-Coordinate and a Negative Y-Coordinate.

       ( x, y )

        x  =  -5 + x/2

        y   =  3 + y/2

       x  =  5

       y  = -3

        Hence, The Coordinate  of the Third Vertex is:  ( 5, -3 )

I hope this helps!

Answer:

5 inches babesss

Step-by-step explanation:

Answer:

She was taller than Sabrina for 6 years.

Step-by-step explanation:

Answer:

Answer below

Step-by-step explanation:

The meaning of congruence in Maths is when two figures are similar to each other based on their shape and size.

Answer:exactly equal shape and size

Step-by-step explanation:

Answer:

The answer is 42.98

Step-by-step explanation:

you can search up rounding charts online and that would help you a lot! After the decimal, it goes by tens, hundreds, thousand, and so on.

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!

Answer:

The bottom graph.

Step-by-step explanation:

The asymptote ( in between the 2 curves) on the bottom graph is  at x = 1, because when x = 1 the denominator = 0.

Answer:

1.  11%

2.  20%

Step-by-step explanation:

See attachment

\( \sf \leadsto \: a_n = a + (n-1) d\)

\( \sf \leadsto \: a_{50} = 10 + (50-1) - 3\)

\( \sf \leadsto \: a_{50} = 10 + (49) - 3\)

\( \sf \leadsto \: a_{50} = 10 + 49 \times ( - 3)\)

\( \sf \leadsto \: a_{50} = 10 + ( - 147)\)

\( \sf \leadsto \: a_{50} = 10 - 147\)

\( \sf \leadsto \: a_{50} = - 137\)

The given series diverges for all values of the variable since the absolute value of the common ratio (3/2) is greater than 1.

The sum of a finite geometric series is given by the formula:S=ar(r^n -1)/(r -1)where S is the sum, a is the first term, r is the common ratio and n is the number of terms. If we take the limit of this formula as n approaches infinity and as r is between -1 and 1 (inclusive), then we have the sum of an infinite geometric series:S=a/(1-r)The sum of the given infinite series will converge if and only if the absolute value of the common ratio is less than 1. Therefore, to find the values of the variable for which the series converges, we must find the absolute value of the common ratio and ensure that it is less than 1.Sum of series:S = 1 + 3/2 + 9/4 + ...+ [3^(n-1)]/[2^(n-2)] + ...The first term is a = 1.The common ratio is r = 3/2.Therefore, we can write:S = 1 + 3/2 + 9/4 + ...+ [3^(n-1)]/[2^(n-2)] + ...= a/(1-r) = 1/[1 - (3/2)] = 1/(1/2) = 2.For what values of the variable does the series converge to this sum?As the common ratio is 3/2 and the absolute value of this ratio is greater than 1, the given series diverges for all values of the variable.

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Answer:

The answer is "Option b"

Step-by-step explanation:

Please find the complete question in the attached file.

In 2006:

Top coats= 297

Parkas= 210

Jackets =213

Raincoats=137

Trench coats =103

Total: \(297+210+213+137+103=960\)  

In 2007:

Top coats =223

Parkas = 210

Jackets= 285

Raincoats = 259,

Trench coats =127

Total: \(223+210+285+259+127=1,104\)

Calculating the percentage of the increasing total sales:

\(\to \frac{1,104-960}{960}\times 100=15\%\)

Calculating the percentage of the increasing sales of the trench coats:  \(\to \frac{127-103}{103}\times 100 \approx 23.3\%\)

Because \(23.3\%- 15\%=8.3\%\) sales of the Trench coats increase by 8.3% point is faster than the total coat sales.

Answer:

B

Step-by-step explanation:

The statement "If x = -10, then x² = 100" is false. When we square -10, we get 100, so the correct statement would be "If x = -10, then x² = 100."

The statement that is NOT true is:

If x = -10, then x² = 100.

The other three statements are all true:

If x² = 100, then x = 10.This is true because the square root of 100 is ±10, and when we take the square root, we consider the positive square root, which is 10.

If x = 10, then x² = 100. This is also true because when we square 10, we get 100.The statement x² = 100 if and only if x = 10 or x = -10 is true.

This statement is based on the fact that the square root of 100 is ±10, so when we square either 10 or -10, we get 100.

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Answer:

7 + 2 + 5 = 143547

Step-by-step explanation:

This question needs to identify the pattern

the pattern

is

5 + 3 + 2 = 151022

First two digits: 5*3 = 15   multiple of first and second term

third and fourth digit: 5*2 = 10 multiple of first and third term

last two digit = First two digits + third and fourth digit - second term

                    = 15+10 - 3 = 22

similarly

9 + 2 + 4 = 183652

9*2 = 18

9*4 = 36

18+36 - 2 = 52

____________________________________

5 + 4 + 5 = 202541

5*4 = 20

5*5 = 25

20+25-4 = 41

_______________________

7 + 2 + 5 = ??????​

7*2 = 14

7*5 = 35

14+35-2 = 49-2 = 47

thus, 7 + 2 + 5 = 143547

Answer:

Option A

Step-by-step explanation:

Let us take this number as x, translating this description of the equation into mathematical language;

\(x^2 = 3x - 2\)

Now let us solve for x;

\(x^2 = 3x - 2,\\x^2+2=3x-2+2,\\x^2+2=3x,\\x^2+2-3x=3x-3x,\\x^2-3x+2=0,\\\\Factored = \left(x-1\right)\left(x-2\right)=0,\\Zero Factor Principle, \\x = 1, x = 2\\\\Solution - Option A\)

* Note that for the the previous problem I solved, I set up a similar equation that had two values for the width, one negative and the other positive. Now the width could only be a positive number, so there was only one solution out of the two.

When graphing an exponential function, a T-chart is commonly used to determine the values. The correct answer is option A.

The T-chart employs positive real numbers since this is the most typical form of exponential function.

Exponential functions are utilized to represent processes that increase or decrease exponentially, as well as to model phenomena in many different disciplines, including science, economics, and engineering.

The exponential function can be represented by the following equation:

\(y=a^x\), where a is the base, x is the exponent, and y is the outcome.

When a is a positive number greater than one, the function is called exponential growth, while when a is a fraction between 0 and 1, the function is called exponential decay.

The T-chart is used to determine the values to use in the graph and connect the dots as required. Positive real numbers are used as the values in the T-chart in order to effectively graph the exponential function.

Therefore, the correct answer is option A.

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To determine which payment plan the real estate investor would prefer, we need to compare the present value of each payment option. Assuming a discount rate of 0%, meaning no time value of money is considered, we can directly compare the payment amounts.

1. Payment of $2,000 at the first of each month: This results in a total payment of $24,000 over the 12-month lease.

2. Upfront payment of $24,000: This option requires paying the full amount at the beginning of the lease.

3. Payment of $2,000 at the end of each month: Similar to option 1, this results in a total payment of $24,000 over the 12-month lease.

4. Upfront payment of $12,000 and $12,000 half-way through the lease: This option requires paying $12,000 at the beginning of the lease and another $12,000 halfway through the lease.

Since all the payment options have a total cost of $24,000, the real estate investor would likely prefer the payment plan that offers more flexibility or matches their cash flow preferences. Options 1 and 3 provide the investor with the option to pay monthly, while options 2 and 4 require a larger upfront payment. The choice would depend on the investor's financial situation and preferences.

The probability of choosing the yellow urn and a white ball is 3/13.

To find the probability of choosing the yellow urn and a white ball, we need to consider the probability of two events occurring:

Choosing the yellow urn: The probability of choosing the yellow urn is 1/3 since there are three urns (brown, yellow, and white) and each urn is equally likely to be chosen.

Drawing a white ball from the yellow urn: The probability of drawing a white ball from the yellow urn is 18/(18+8) = 18/26 = 9/13, as there are 18 yellow balls and 8 white balls in the yellow urn.

To find the overall probability, we multiply the probabilities of the two events:

P(Yellow urn and white ball) = (1/3) × (9/13) = 9/39 = 3/13.

Therefore, the probability of choosing the yellow urn and a white ball is 3/13.

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Answer:

Step-by-step explanation:

Since,

It's a rectangle so it will be formed on the coordinate which is 3units above dot(3,5) in picture where above the dot there is no point .

Answer:

Step-by-step explanation:

Answer:

52.5

Step-by-step explanation:

7.50 x 7

On solving the provided question, w can say that - by distance here we can say that the distance are    \(d = sqrt ((20 - 80)^2 + (60 - 20)^2) = 72.11 = > d = sqrt ((110 - 20)^2 + (85 - 60)^2) = 93.41\)

Distance is a quantitative and occasionally qualitative indicator of how far away two objects or points are. Distance in physics or common use can refer to estimates based on physical length or other factors. formula for determining distance. a formula in algebra that uses coordinates to represent the distance between two places (see Coordinate Systems). The Cartesian point distance formula is based on the Pythagorean theorem in both 2-D and 3-D Euclidean space.

The distance formula given two points is,

\(d = sqrt ((x_2 - x_1)^2 + (y_2 - y_1)^2)\\ d = sqrt ((12 - 0)^2 + (3 - 5)^2) = 12.17\)                        

now to calculate the distance

\(d = sqrt ((20 - 80)^2 + (60 - 20)^2) = 72.11\\ d = sqrt ((110 - 20)^2 + (85 - 60)^2) = 93.41\)

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Answer: #x^3

Step-by-step explanation:

        x^3

note: An algebraic expression doesn't have an equal sign (=)

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Answer:

AC = 70

BG = 38

GC = 28

AE = 63

Step-by-step explanation:

The given parameters are;

The centroid of ΔABC = G

The length of FC = 35

The length of AG = 42

The length of BF = 57

The length of DG = 14

Given that the centroid is the intersection of the medians, we have;

FA = FC = 35 Definition of median line FB, (point F is the midpoint of AC)

AC = FA + FC = 35 + 35 = 70 by segment addition postulate

AC = 70

BG = 2/3 × BF = 2/3 × 57 = 38 Definition of median line BF

BG = 38

DG = 14 = 1/3 × DC Definition of median line

∴ DC = 3 × DG = 3 × 14 = 42

GC = 2/3 × DC = 2/3 × 42 = 28 Definition of median line DC

GC = 28

AG = 42 = 2/3 × AE Definition of median line AE

∴ AE = 3/2 × 42 = 63

AE = 63.

Answer:

105

Step-by-step explanation:

0 (104) is equal to 0, so let's cross that out. 103 times 102 is definitely not equal to 105. The third one is 105. The fourth one is not 105. The last one is not 105 either.

The difference between groups and the sample size makes the results of a study statistically significant.

Statistical significance is a measure of the likelihood that the results of a study are not due to chance. In order for a result to be statistically significant, it must meet two criteria:

The difference between groups must be large enough to be unlikely to occur by chance. This is typically assessed using a statistical test such as a t-test or an ANOVA.

The result of the test is expressed as a p-value, which represents the probability of obtaining the observed results if there were no true difference between groups. A p-value of less than 0.05 (or 5%) is generally considered to be statistically significant.

The sample size must be large enough to reduce the possibility of sampling error. A larger sample size generally increases the power of a study, making it more likely to detect a true effect.

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