Question: Two proposed computer mouse designs were compared by recording wrist extension in degrees for 24 people who each used both mouse types (Comparative Study of

Two proposed computer mouse designs were compared by recording wrist extension in degrees for 24 people who each used both mouse types (“Comparative Study of Two Computer Mouse Designs,” Cornell Human Factors Laboratory Technical Report RP7992). The difference in wrist extension was computed by subtracting extension for mouse type B from the wrist extension for mouse type A for each student. The mean difference was reported to be 8.82 degrees. Assume that it is reasonable to regard this sample of 24 people as representative of the population of computer users.
a. Suppose that the standard deviation of the differences was 10 degrees. Is there convincing evidence that the mean wrist extension for mouse type A is greater than for mouse type B? Use a .05 significance level.
b. Suppose that the standard deviation of the differences was 26 degrees. Is there convincing evidence that the mean wrist extension for mouse type A is greater than for mouse type B? Use a .05 significance level.
c. Briefly explain why a different conclusion was reached in the hypothesis tests of Parts (a) and (b).

Step by Step Solution

★★★★★

3.36 Rating (165 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a 1 d mean difference in wrist extension type Atype B 2 H 0 d 3 H a d 4 a 005 6 We are told to assum... 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)

536-M-S-O-T-P (1166).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Medical research has shown that repeated wrist extension beyond 20 degrees increases the risk of wrist and hand injuries. Each of 24 students at Cornell University used a proposed new computer mouse...

Adults who broke their wrists were randomly divided into two groups. The "intervention" group was given exercises to do under the direction of a physiotherapist. The "control" group did not receive...

Student researchers wanted to see if a persons reaction time is slower if they use their nondominant hand to click a computer mouse compared to using their dominant hand. The researchers had a...

thanks tutors:- Two proposed computer mouse designs were compared by recording wrist extension in degrees for 24 people who each used both mouse types ("Comparative Study of Two Computer Mouse...

please solve attached questions:- Two proposed computer mouse designs were compared by recording wrist extension in degrees for 24 people who each used both mouse types ("Comparative Study of Two...

=+11.37 Two proposed computer mouse designs were compared by recording wrist extension in degrees for 24 people who each used both mouse types (Comparative Study of Two Computer Mouse Designs,...

Two proposed computer mouse designs were compared by recording wrist extension in degrees for 24 people who each used both mouse types. The difference between wrist extension from Mouse B was...

KINDLY SOLVE SHOWING ALL THE EXPLANATIONS... ONLY CORRECT ANSWER PLEASE:- Two proposed computer mouse designs were compared by recording wrist extension in degrees for 24 people who each used both...

Need help with assignment:- Two proposed computer mouse designs were compared by recording wrist extension in degrees for 24 people who each used both mouse types ("Comparative Study of Two Computer...

9.40 Medical research has shown that repeated wrist extensions beyond 20 degrees increase the risk of wrist and hand injuries. Each of 24 students at Cornell University used a proposed new computer...

Donald dies in 2014, and under his will, a trust is created in the amount of $6 million with the following provisions: life estate to Cindy (Donalds wife) and remainder to their children. His will...

A bank currently holds a loan with a principal of $ 12 million. The loan generates quarterly interest payments at a rate of LIBOR plus 300 basis points, with the payments made on the 15th of...

Harry, aged 6 0 , recently sold his business and oblaines $ 1 0 0 , 0 0 0 after paying fees and taxes. He plans io himethe name h , invest for guarantees minimize costs. an older brother had heart...

Which emotion-regulation technique do you think would be the most successful in mitigating boredom and why?

In one year, earnings growth of the 500 largest U.S. corporations averaged 9.2%; the standard deviation was 3.5%. a. It can be guaranteed that 84% of these earnings growth figures will be in what...

Tires of a particular brand have a lifetime mean of 29,000 miles and a standard deviation of 3,000 miles. a. It can be guaranteed that 75% of the lifetimes of tires of this brand will be in what...

The supervisor of a very large plant obtained the time (in seconds) for a random sample of n = 110 employees to complete a particular task. The data is stored in the data file Completion Times. a....

The primary purpose of finance is to _ _ _ _ _ _ _ _ _ _ . a . ) keep track of a business's cash flow b . ) pay off debt as quickly as possible c . ) manage assets in a way that maximizes returns d ....

Anderson International Limited is evaluating a project in Erewhon. The project will create the following cash flows: All cash flows will occur in Erewhon and are expressed in dollars. In an attempt...

Question 2 (1 point) Mortgage Information: Initial Loan Amount: $100,000 Fully Amortizing Term: 30 years Fixed rate interest rate: 4.18% It is 5 years since this loan was originated -- what is the...