Question: A class has 420 students. The final examination is optional-taking it can raise, but cannot lower, a student's grade. Of a random sample of 80

A class has 420 students. The final examination is optional-taking it can raise, but cannot lower, a student's grade. Of a random sample of 80 students, 31 indicated that they would take the final examination.
Find a 90% confidence interval for the total number of students in this class intending to take the final examination.

Step by Step Solution

★★★★★

3.40 Rating (159 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

x n 3180 3875 0494 90 confidence ... 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)

488-M-S-O-T-S-E (280).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

In a student survey, 200 indicated that they would attend Summer Session I and 150 indicated Summer Session II. If 75 students plan to attend both summer sessions and 275 indicated that they would...

Fifty-eight percent of people surveyed said that they would take a ride in a fully self-driving automobile. Find the mean, variance, and standard deviation of the number of people who would agree to...

A random sample of final examination grades for a college course follows. Use = .05 and test to determine whether a normal distribution should be rejected as being representative of the population's...

A class has 420 students. The final examination is optional--taking it can raise, but not lower, a student's grade. Of a random sample of eighty students, thirty-one indicated that they would take...

A class has 270 students. The final examination is optional taking it can raise, but cannot lower, a students grade. Of a random sample of 45 students, 27 indicated that they would take the final...

COMM 215: BUSINESS STATISTICS REVIEW PROBLEMS 1 Descriptive Statistics 1. The listing below gives the service window of A&W: 4.91 0.85 0.52 2.51 1.92 2.66 1.94 5.19 2.33 3.51 2.95 2.62 service times...

2 Step-by-Step please This is a past assignment and I will have a 2016 Assignment following soon. Need within 15 days. 1) According to the record of the registrar's office at a state university, 35%...

Possible Multiple Choice Questions for the Exam. Focus on the topics discussed in class. Chapter 1 Multiple Choice Identify the choice that best completes the statement or answers the question. ____...

Describing Data Once we have collected data from surveys or experiments, we need to summarize and present the data in a way that will be meaningful to the reader. We will begin with graphical...

Why might purchasing power parity fail to hold? Discuss.

Refer to the data in Exercise. In Exercise, Back Mountain Industries (BMI) has two divisions: East and West. BMI has a cost-of-capital of 15%. Selected financial information (in thousands of dollars)...

Tue Mar 1 3 5 3 % Week 9 Quiz Question 9 Not yet inseered Marked out of 1 . 0 0 Siva is contemplating to buy a 2 0 year annuity paying $ 2 5 0 0 at the end of each month. What amount will be required...

6. The break-even analysis is a useful device of profit planning. Do you agree? Discuss. (B.U., Bhopal, MBA - 2000) (18.5, 18.5.1 and 18.5.2)

The daily car rental rates for a sample of eight cities follow. City Daily Car Rental Rate ($) Atlanta ..............47 Chicago .............50 Dallas .............53 New Orleans ..........45 Phoenix...

The Fidelity Growth & Income mutual fund received a three-star, or neutral, rating from Morningstar. Shown here are the quarterly percentage returns for the five-year period from 2001 to 2005...

To analyze the risk, or volatility, associated with investing in Chevron Corporation common stock, a sample of the monthly total percentage return for 12 months was taken. The returns for the 12...

Question 1 0 ( 2 points ) { ( a b ) 3 n : n 0 } is not a regular language. True False Question 1 1 ( 4 points ) To which regular set the following regular expression corresponds to . ( a a b b ) * a...

Of 54 bank customers depositing a check, 23 received some cash back. (a) Construct a 90 percent confidence interval for the proportion of all depositors who ask for cash back. (Round your answers to...

Give the degrees of freedom for the chisquare test based on the two-way table. E F G Total A 3'? 34 43 34 150 3 F5 85' 3\"] 5'3 330 C 23 3? 27 33 120 Total 140 160 140 160 600 Degrees of freedom = n