a. Use these data to estimate the mean wrist exten-sion for people using this new mouse design usinga 90% confidence interval.b. Are any assumptions required in order for it tobe appropriate to generalize your estimate to thepopulation of Cornell students? To the populationof all university students?c. Based on your interval from Part (a), do youthink there is reason to believe that the meanwrist extension for people using the new mousedesign is greater than 20 degrees? Explain why orwhy not. 9.40 Medical research has shown that repeated wristextensions beyond 20 degrees increase the risk ofwrist and hand injuries. Each of 24 students at CornellUniversity used a proposed new computer mousedesign, and while using the mouse, each student'swrist extension was recorded. Data consistent withsummary values given in the paper "ComparativeStudy of Two Computer Mouse Designs" (CornellHuman Factors Laboratory Technical Report RP7992)are given here.2728 24 26 27 25 25 24 24 24 25 2822 25 24 28 27 26 31 2528 27 27 25

Name: a. Use these data to estimate the mean wrist exten-sion for people us
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Description: a. Use these data to estimate the mean wrist exten-sion for people using this new mouse design usinga 90% confidence interval.b. Are any assumptions required in order for it tobe appropriate to generalize your estimate to thepopulation of Cornell st

The data represents the wrist extension of 24 students. The confidence interval for a population…

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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 mouse design, and while using the mouse, each student's wrist extension was recorded. Data consistent with summary values given in the paper "Comparative Study of Two Computer Mouse Designs" (Cornell Human Factors Laboratory Technical Report RP7992) are given here. 27 28 24 26 27 25 25 24 24 24 25 28 22 25 24 28 27 26 31 25 28 27 27 25

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 mouse design, and while using the mouse, each student's wrist extension was recorded. Data consistent with summary values given in the paper "Comparative Study of Two Computer Mouse Designs" (Cornell Human Factors Laboratory Technical Report RP7992) are given here. 27 28 24 26 27 25 25 24 24 24 25 28 22 25 24 28 27 26 31 25 28 27 27 25

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

Topic Video

Question

a. Use these data to estimate the mean wrist exten-
sion for people using this new mouse design using
a 90% confidence interval.
b. Are any assumptions required in order for it to
be appropriate to generalize your estimate to the
population of Cornell students? To the population
of all university students?
c. Based on your interval from Part (a), do you
think there is reason to believe that the mean
wrist extension for people using the new mouse
design is greater than 20 degrees? Explain why or
why not.

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 mouse
design, and while using the mouse, each student's
wrist extension was recorded. Data consistent with
summary values given in the paper "Comparative
Study of Two Computer Mouse Designs" (Cornell
Human Factors Laboratory Technical Report RP7992)
are given here.
27
28 24 26 27 25 25 24 24 24 25 28
22 25 24 28 27 26 31 25
28 27 27 25

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