The standard deviation for a population is 15 3 A sample of 36 observations selected from this population gave a mean equal to 74 8 a Make a 90 confidence interval for b Construct a 95 confidence interval for c Determine a 99 confidence interval for d Does the width of the confidence intervals constructed in parts a through c increase as the confidence level increases Explain your answer

Question: The standard deviation for a population is = 15.3. A sample of 36 observations selected from this population gave a mean equal to 74.8.

The standard deviation for a population is σ = 15.3. A sample of 36 observations selected from this population gave a mean equal to 74.8.
a. Make a 90% confidence interval for µ.
b. Construct a 95% confidence interval for µ.
c. Determine a 99% confidence interval for µ.
d. Does the width of the confidence intervals constructed in parts a through c increase as the confidence level increases? Explain your answer.

Step by Step Solution

★★★★★

3.45 Rating (171 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

n 36 748 153 and n 15336 255 a The 90 confidence interval for is z 748 165255 748 421 705... View full answer

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)

492-M-S-P-E (542).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

The standard deviation for a population is = 14.8. A sample of 25 observations selected from this population gave a mean equal to 143.72. The population is known to have a normal distribution. a....

The standard deviation for a population is = 6.30. A random sample selected from this population gave a mean equal to 81.90. The population is known to be normally distributed. a. Make a 99%...

The standard deviation for a population is = 7.14. A random sample selected from this population gave a mean equal to 48.52. a. Make a 95% confidence interval for assuming n = 196. b. Construct a...

The standard deviation for a population is 15.3. A sample of 36 observations selected from this population gave a mean equal to 74.8. a. Make a 90% confidence interval for .

8.13 The standard deviation for a population is 15.3. A sample of 36 observations selected from this population gave a mean equal to 74.8. a. Make a 90% confidence interval for . b. Construct a 95%...

8.14 The standard deviation for a population is 14.8. A sample of 25 observations selected from this population gave a mean equal to 143.72. The population is known to have a normal distribution....

Current Attempt in Progress The standard deviation for a population is = 14.3. A sample of 19 observations selected from this population gave a mean equal to 138.80. The population is known to have a...

QUESTION 15 We have a random sample of size 17. We have information on a variable that has a sample standard deviation 25. Assume that the assumptions of the CLT are satisfied. Then the margin of...

The monthly incomes for 1212 randomly selected people, each with a bachelor's degree in economics, are shown on the right. Complete parts (a) through (c) below. Assume the population is normally...

From a population with standard deviation 25, a sample of size 100 is drawn. The mean of the sample is 235. Construct a 90% confidence interval for the true mean of the population. An evaluator...

Bank Muslim has entered into an Ijara contract with Barakah Construction to lease equipment for a period of 5 years. The bank purchased specialized equipment from a local manufacturer on 01 January...

You were requested to personally deliver your auditors report to the board of directors of Sebal Manufacturing Corporation and answer questions posed about the financial statements. While reading the...

2. Shortest Processing Time (SPT)

Explain the concept of hypercompetition

5 3x

8 2x 6 Describe the solution set as an inequality, in interval notation, and on a graph.

3c 6 5c Describe the solution set as an inequality, in interval notation, and on a graph.

Beginning inventory on January 1 Purchase on January 9 Purchase on January 25 \begin{tabular}{rr} Units & Unit Cost \\ 250 & $2.30 \\ 60 & 2.50 \\ 100 & 2.64 \end{tabular} Answer is not complete....

Assignment 12B - Graded Remaining Time 130 00 31 What is the effective annual rate if the annual percentage rate is 11% compounded weekly? Enter your answer as a percentage rounded to two decimal...

Dividend Yield. BMM Industries pays a dividend of $2 per quarter. The dividend yield on its stock is reported at 4.8%. What price is the stock selling at? ( LO7-1 )