Question: Would you mind explaining to me the answer to this question, please? A class survey in a large class for first-year college students asked, About

Would you mind explaining to me the answer to this question, please?

A class survey in a large class for first-year college students asked, About how many hours do you study during a typical week? The mean response of the 463 students wasx= 15.3 hours.

Suppose that we know that the study time follows a Normal distribution with standard deviation= 8.5 hours in the population of all first-year students at this university.

Step 1:

Use the survey result to give a 99% confidence interval for the mean study time of all first-year students.24.08 to 28.92

14.98 to 21.02

14.28 to 16.32

17.64 to 18.36

What condition not yet mentioned is needed for your confidence interval to be valid?SRS.

Unknown.

Normal distribution.

Known.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock 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

Students Have Also Explored These Related Mathematics Questions!

Question 2 (14 marks) According to internal testing done by a car battery company over many years, the mean lifetime of car batteries sold on new cars is normally distributed with a mean of 5 years...

In a recent survey, the following question was asked of 1600 full-time community college students: "About how many hours do you spend in a typical 7-day week preparing for class (studying, reading,...

Exam 2 Statistical Analysis Part 1 of 1 - Question 1 of 20 5.0/ 100.0 Points 0.0/ 5.0 Points The stacked bar chart below shows the percentages of death due to cancer in four geographic regions of the...

Q1) Label each study as either an observational study, an experiment, or neither. Group of answer choices From December 2007 through March 2012, researchers at the University of Pittsburgh studied a...

MEAN 6.0000 WHEN WE HAVE LARGE DATA SETS, WE GROUP THE DATA. IN THIS CASE OUR GROUPS WILL BE: STD DEV 2.17 IN A NORMAL DISTRIBUTION THE MEAN, MEDIAN AND MODE ARE ALL THE SAME NUMBER X-VALUES Z-VALUES...

2. There are 24 students enrolled in an introductory statistics class at a small university. Asan in-class exercise the students were asked how many hours of television they watcheach week. Their...

question on top and data on the bottom pls kindly solve rent&buy and sleephrs,they all one question.Thank you! Students were asked whether they rented or bought their textbook for this class. One of...

assap tutors please help solve the following questions: 19. A well-known automobile manufacturer claimed in a 1986 television commercial that 70 percent of its cars that had been registered in the...

1 of 40 A class consists of 50 women and 82 men. If a student is randomly selected, what is the probability that the student is a woman? 2.5 Points A. 32/132 B. 27/66 C. 50/132 D. 82/132 If a person...

SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Find the indicated probability. Round to four decimal places. 1) A car insurance company has...

(a) List ways in which the resolution between two closely spaced peaks might be changed. (b) After optimization of an isocratic elution with several solvents, the resolution of two peaks is 1.2. How...

Several years ago, Ethan purchased the former parsonage of St. James Church to use as a personal residence. To date, Ethan has not received any ad valorem property tax bills from either the city or...

What are your reactions to the application of neuroscience to marketing (neuromarketing) that was described in the IMC Focus? Do you consider this technique ethical? Do you fear that with the...

The following are the orders processed during the last 5 weeks for a Canadian logistics company ,the owner need to forecast using linear regression model how will be the orders by week 15, data of...

2. Set up two points representing the pillars of your values system. Discuss this with the others in the group.

8. Find values in the Norwegian culture that you believe have been stable over a long period. Do you feel that these values say something about your own values?

2. It is the results achieved that are important.