Question: a. The sample mean and standard deviation from a sample of 81 observations are x = 63 and s = 8. Estimate e with 95%

a. The sample mean and standard deviation from a sample of 81 observations are x̄ = 63 and s = 8. Estimate e with 95% confidence.

b. Repeat part (a) with n = 64.

c. Repeat part (a) with n = 36.

d. Describe what happens to the confidence interval Estimate when the sample size decreases.


Step by Step Solution

★★★★★

3.38 Rating (167 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock

a 63 1990881 63 177 LCL 6123 UCL ... View full answer

blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Document Format (1 attachment)

Word file Icon

398-M-S-O-T-P (6).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Q:

a. The sample mean and standard deviation from a random sample of 10 observations from a normal population were computed as x = 23 and s = 9. Calculate the value of the test statistic of the test...

Q:

Are the values of the mean and standard deviation that are calculated using grouped data exact or approximate values of the mean and standard deviation, respectively? Explain.

Q:

Describe what happens to a firms current asset accounts if the firm has seasonal sales and they use. (a) Level production. (b) Seasonal production.

Q:

A random sample of 25 was drawn from a population. The sample mean and standard deviation are and standard deviation arex =510 and s=125 . Estimate with 95% confidence. 2. repeat part (a) with n=50 ....

Q:

A manufacturing company's quality control personnel have recorded the proportion of defective items for each of 500 monthly shipments of one of the computer components that the company produces. The...

Q:

A manufacturing company's quality control personnel have recorded the proportion of defective items for each of 500 monthly shipments of one of the computer components that the company produces. The...

Q:

A manufacturing company's quality control personnel have recorded the proportion of defective items for each of 500 monthly shipments of one of the computer components that the company produces. The...

Q:

A manufacturing company's quality control personnel have recorded the proportion of defective items for each of 500 monthly shipments of one of the computer components that the company produces. The...

Q:

A manufacturing company's quality control personnel have recorded the proportion of defective items for each of 500 monthly shipments of one of the computer components that the company produces. The...

Q:

A manufacturing company's quality control personnel have recorded the proportion of defective items for each of 500 monthly shipments of one of the computer components that the company produces. The...

Q:

Selected account balances before adjustment for Heartland Realty at August 31, 2014, the end of the current year, are as follows: Data needed for year-end adjustments are as follows: a. Unbilled fees...

Q:

Using the contribution margin approach for a special order decision Winchester Company produces and sells a food processor that it prices at a 25 percent markup on total cost. Based on data...

Q:

Worldwide, Red Bull has the highest market share of all energy drinks, with more than 6 billion cans sold annually (thats almost one can for every person worldwide). So, either you drink Red Bull, or...

Q:

Discuss how pathgoal theory explains leadership.

Q:

Z-value for testing p1 - p 2 = d 0 : To test the null hypothesis Ho that p 1? - p 2 = do, where do ? 0, we base our decision on which is a value of a random variable whose distribution approximates...

Q:

A study was made to determine whether there is a difference between the proportions of parents in the states of Maryland (MD), Virginia (VA), Georgia (GA), and Alabama (AL) who favor placing Bibles...

Q:

A study was conducted at the Virginia- Maryland Regional College of Veterinary Medicine Equine Center to determine if the performance of a certain type of surgery on young horses had any effect on...

Q:

A researcher has conducted a study and has obtained a data set. He is seeking your help and requests that you calculate the mean, range, median, and mode and distinguish which of these are measures...

Q:

If a bond pays $50 interest semi-annually with a par value of $1,000, its coupon rate is 5% 10% 15% 20% Investors are willing to purchase bonds with a call feature only if the bonds offer a(n)...

Q:

Why is growing the number of users such an important metric for social media companies? How does Metcalfes Law relate to the profitability of social media companies? How could LinkedIn help create...