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(a) Use the survey result to give a 99% confidence inter- val for the mean study time of all first-year students. (b) What condition not yet mentioned must be mer for your confidence interval to be valid? America

(a) Use the survey result to give a 99% confidence inter- val for the mean study time of all first-year students. (b) What condition not yet mentioned must be mer for your confidence interval to be valid? America

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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CHAPT 40 Student study times. A class survey in a large class for (b) What condition not yet mentioned must be met for your confidence interval to be valid? ing ES cal basis we apply first-year college students asked, “About how hours do you study during a typical week?" The mean ve know many onstruct response of the 463 students was x = 13.7 hours Sun- pose that we know that the study time follows a Normal %3D distribution with standard deviation o = 7.4 hours in %3D the population of all first-year students at this university online (a) Use the survey result to give a 99% confidence inter- hapter: val for the mean study time of all first-year students. ques- (0) What condition not vet mentioned must be mer for addi- to 1620 America
Transcribed Image Text:CHAPT 40 Student study times. A class survey in a large class for (b) What condition not yet mentioned must be met for your confidence interval to be valid? ing ES cal basis we apply first-year college students asked, “About how hours do you study during a typical week?" The mean ve know many onstruct response of the 463 students was x = 13.7 hours Sun- pose that we know that the study time follows a Normal %3D distribution with standard deviation o = 7.4 hours in %3D the population of all first-year students at this university online (a) Use the survey result to give a 99% confidence inter- hapter: val for the mean study time of all first-year students. ques- (0) What condition not vet mentioned must be mer for addi- to 1620 America
Explain why this is true. 7.30 Hotel managers' personalities. Successful hotel man- agers must have personality characteristics tradition- ally stereotyped as feminine (such as "compassionate") as well as those traditionally stereotyped as masculine (such as "forceful"). The Bem Sex-Role Inventory (BSRI) is a personality test that gives separate ratings for "female" and "male" stereotypes, both on a scale of 1 to 7. Although the BSRI was developed at a time >> when these stereotypes were more pronounced, it is still widely used to assess personality types. Unfortunately, the ratings are often referred to as femininity and mas- culinity scores. A sample of 148 male general managers of three- star and four-star hotels had mean BSRI femininity score x = 5.29.6 The mean score for the general male population is u = 5.19. Do hotel managers, on the average, differ statistically significantly in femininity score from men in general? Assume that the standard
Transcribed Image Text:Explain why this is true. 7.30 Hotel managers' personalities. Successful hotel man- agers must have personality characteristics tradition- ally stereotyped as feminine (such as "compassionate") as well as those traditionally stereotyped as masculine (such as "forceful"). The Bem Sex-Role Inventory (BSRI) is a personality test that gives separate ratings for "female" and "male" stereotypes, both on a scale of 1 to 7. Although the BSRI was developed at a time >> when these stereotypes were more pronounced, it is still widely used to assess personality types. Unfortunately, the ratings are often referred to as femininity and mas- culinity scores. A sample of 148 male general managers of three- star and four-star hotels had mean BSRI femininity score x = 5.29.6 The mean score for the general male population is u = 5.19. Do hotel managers, on the average, differ statistically significantly in femininity score from men in general? Assume that the standard
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