Question: Suppose, for a sample selected from a normally distributed population, 68.50 and s = 8.9. a. Construct a 95% confidence interval for assuming

Suppose, for a sample selected from a normally distributed population, 68.50 and s = 8.9.
a. Construct a 95% confidence interval for µ assuming n = 16.
b. Construct a 90% confidence interval for µ assuming n = 16. Is the width of the 90% confidence interval smaller than the width of the 95% confidence interval calculated in part a? If yes, explain why.
c. Find a 95% confidence interval for µ assuming n = 25. Is the width of the 95% confidence interval for with n 25 smaller than the width of the 95% confidence interval for µ with n = 16 calculated in part a? If so, why? Explain.

Step by Step Solution

★★★★★

3.41 Rating (170 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

n 16 6850 s 89 s sn 8916 2225 and df n 1 16 1 15 a 2 5 952 025 and t 2131 The 95 confiden... 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 (579).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

A sample of 22 observations selected from a normally distributed population produced a sample variance of 18. a. Write the null and alternative hypotheses to test whether the population variance is...

A sample of 30 observations selected from a normally distributed population produced a sample variance of 5.8. a. Write the null and alternative hypotheses to test whether the population variance is...

A sample of 18 observations selected from a normally distributed population produced a sample variance of 4.6. a. Write the null and alternative hypotheses to test whether the population variance is...

8.48 Suppose, for a sample selected from a normally distributed population, 68.50 and s 8.9. a. Construct a 95% confidence interval for assuming n 16. b. Construct a 90% confidence interval for ...

Suppose, for a random sample selected from a normally distributed population, x = 74.40 ands = 7.2 Round your answers to 2 decimal places. a. Construct a 95% confidence interval for / assuming n =...

Frist answer a question of 7.1 Done 6 myopenmath.com AA 6 Chapter 7.2 Homework Score: 0/11 0/11 answered Progress saved Done (3) wlc. 0 Question 10 V l3 0/1 pt '0 3 8 99 G) Details The high...

For computational statistics Suppose, for a random sample selected from a normally distributed population, x = 68.10 and s = 9.7 Round your answers to 2 decimal places. a. Construct a 95% confidence...

Nirva Derose Instructions: Please work a problem to the best of your ability. Show all work; partial credit will not be awarded if I cannot easily follow and understand your work. Select the best...

Question 1 A random sample of 35 two-year colleges in 2008-2009 collected data on the in-state tuition costs and enrollment totals. Based on the sample, the researchers estimated the mean in-state...

1 Select one answer. 10 points A local fast food company sells a 16-oz soft drink. To determine if the soft drinks served contain less than the advertised 16 oz, a random sample of 20 drinks is...

Explain and list six of the elements of a company's financial report?

Starting with 2.50 mol of N2 gas (assumed to be ideal) in a cylinder at 1.00 atm and 20.0oC, a chemist first heats the gas at constant volume, adding 1.52 X 104 J of heat, then continues heating and...

A memory system employing paging may suffer slightly from internal fragmentation and experiences no external fragmentation. Question 6 options: True False

Altered Version of Logarithmic Preferences Alter Example 8,1 as follows, Assume that u*[ch(t), c(t + 1)] = In[c (t) + a] + In[c(t + 1) + y'], Assume that all other features of the example are the...

a. Find an equation of a line with slope -2. b. Find an equation of a line with y-intercept (0, 4). c. Find an equation of a line that contains the point (3, 5). d. Determine whether there is a line...

a. Graph y = 2x - 3 by hand. b. Choose two points that lie on the graph. Then use the two points to find an equation of the line that contains them. Compare your equation with the equation y = 2x - 3.

Find an equation of the line that contains the points (3, 7) and (4, 9). After finding the slope, you used one of the points to complete the process. Now use the other point to complete the process....

Problem 1: According to the CAPM, what is the expected return on a security given a market risk premium of 12%, a stock beta of 1.44, and a risk free interest rate of 1%? Put the answers in decimal...

Which keyboard command can be used to format data as a table?

You are considering an equipment purchase costing $167,000. This equipment will be depreciated straight-line to zero over its three-year life. What is the average accounting return if this equipment...