Question: Professor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave

Professor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave them all the same test. One group had exactly 1 hour in which to finish the test, and the other group could stay as long as desired. The results are shown in the following table. Test at the 0.01 level of significance that time to complete a test and test results are independent.

Time 1 h Unlimited Column Tota 490 12 8 150 20 Row Total 142 158 300 23 42 65 17 48 85

Step by Step Solution

★★★★★

3.47 Rating (157 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Chisquare test of independence i 001 H 0 Time to take a test ... 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)

785-M-S-S-I (4789).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Jerry Smith (see Problem 3-38) has done some analysis about the profitability of the bicycle shop. If Jerry builds the large bicycle shop, he will earn $ 60,000 if the market is favorable, but he...

Most college instructors prefer to have their students participate actively in class. Ideally, students will ask their professor questions and answer their professors questions, making the classroom...

Professor Bert Forman believes the students who complete his examinations in the shortest time receive the highest grades and those who take the longest to complete them receive the lowest grades. To...

Please answer the following study questions in the attached documents Professor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two...

6. Education: Exams Professor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave them all the same test. One group...

Education: Exams Professor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave them all the same test. One group had...

can you please send the answer a little bit faster Professor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave them...

Brad sold a rental house that he owned for $251,500. Brad bought the rental house five years ago for $223,500 and has claimed $50,750 of depreciation expense. What is the amount and character of...

A counter flowing heat exchanger has one line with 2 kg/s at 125 kPa, 1000 K entering and the air is leaving at 100 kPa, 400 K. The other line has 0.5 kg/s water coming in at 200 kPa, 20C and leaving...

4 Multiple Answer 5 points Which of the following are basic rights for employees? Select all that apply. Freedom of Speech Privacy Insurance Free Consent Due Process Paid Leave Freedom of Conscience

The administrator of a new paralegal program at Seagate Technical College wants to estimate the grade point average in the new program. He thought that high school GPA, the verbal score on the...

Surveys: Manipulation The New York Times did a special report on polling that was carried in papers across the nation. The article pointed out how readily the results of a survey can be manipulated....

General: Completely Randomized Experiment How would you use a completely randomized experiment in each of the following settings? Is a placebo being used or not? Be specifi c and give details. (a) A...

General: Gathering Data Which technique for gathering data (sampling, experiment, simulation, or census) do you think was used in the following studies? (a) An analysis of a sample of 31,000 patients...

At 7 percent interest, how long does it take to double your money? ( Enter rounded answer as directed, but do not use the rounded numbers in intermediate calculations. Round your answer to 2 decimal...

1. Using the constant growth model, a firm's expected (D1) dividend yield is 4% of the stock price, and its growth rate is 7.5%. If the tax rate is 35%, what is the firm's cost of equity? A. 6.65% B....

Please explain with excel 6. Using a Spreadsheet to Calculate Yield to Maturity. What is the yield to maturity on the following bonds; all have a maturity of 10 years, a face value of $1,000, and a...