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3 years ago

I am not sure how to approach this problem or where to start? How would I be able to solve this problem?

Mathematics

1 answer:

Reika [66]3 years ago

6 0

Answer:

5.7

Step-by-step explanation:

We can use a proportion to solve the problem:

24 : 100 = 1.37 : x

x = (100 * 1.37)/24 = 137/24 = 5.7

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Suppose that an internal report submitted to the managers at a bank in Boston showed that with 95 percent confidence, the propor

Dmitry [639]

Answer:

The sample size used to compute the 95% confidence interval is 1066.

Step-by-step explanation:

The (1 - α)% confidence interval for population proportion is:

$CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}$

The 95% confidence interval for proportion of the bank's customers who also have accounts at one or more other banks is (0.45, 0.51).

To compute the sample size used we first need to compute the sample proportion value.

The value of sample proportion is:

$\hat p=\frac{Upper\ limit+Lower\ limit}{2}=\frac{0.45+0.51}{2}=0.48$

Now compute the value of margin of error as follows:

$MOE=\frac{Upper\ limit-Lower\ limit}{2}=\frac{0.51-0.45}{2}=0.03$

The critical value of z for 95% confidence level is:

$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96$

Compute the value of sample size as follows:

$MOE=z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}\\0.03=1.96\times \sqrt{\frac{0.48(1-0.48)}{n}}\\(\frac{0.03}{1.96})^{2}=\frac{0.48(1-0.48)}{n}\\n=1065.404\\n\approx1066$

Thus, the sample size used to compute the 95% confidence interval is 1066.

4 0

3 years ago

Evaluate the geometric series: a1 =-1, r= 2, n= 7

Alex73 [517]

Answer:

Common Ratio: 2

Step-by-step explanation:

3 0

4 years ago

Engler company purchases a new delivery truck for $55000. the sales taxes are $4000. the logo of the company is painted on the s

Nikolay [14]

Answer:

$60,890 is the cost of new truck.

Step-by-step explanation:

Given :

Purchasing cost of truck =$55000.

Sales Tax=$4000

Painted logo cost = $1600

Safety testing cost =$290.

Then the Cost of truck can be determined by

$= Purchase\ cost\ + \ Sales\ tax\ +\ painted \ logo\ cost\ +\ safety\ testing \ cost\\= 55,000+4000+1600+290\\= 60,890$

3 0

3 years ago

Lucy took a taxi from her house to the airport. The taxi company charged a pick-up fee of $3.80 plus $3 per mile. The total fare

prisoha [69]

If you do 39.80/ 3 it would give you 13.2667miles and since the tip was not added that’s when you don’t do anything with that number and 3 because every mile you pay 3$

4 0

3 years ago

Read 2 more answers

A company charges $10 for shipping and $7 per shirt.

djverab [1.8K]

Answer:

i think the answer is 6 shirts

Step-by-step explanation

52 -10 because shipping cost 10$

and then 42 divided by 7$

and you get six

6 0

3 years ago