please use the calculator method CHAPT40 Student study times. A class survey in a large class for(b) What condition not yet mentioned must be met foryour confidence interval to be valid?ingEScal basiswe applyfirst-year college students asked, “About howhours do you study during a typical week?" The meanve knowmanyonstructresponse of the 463 students was x = 13.7 hours Sun-pose that we know that the study time follows a Normal%3Ddistribution with standard deviation o = 7.4 hours in%3Dthe population of all first-year students at this universityonline(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 foraddi-to1620America 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 ratingsfor "female" and "male" stereotypes, both on a scaleof 1 to 7. Although the BSRI was developed at a time>>when these stereotypes were more pronounced, it is stillwidely 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 femininityscore x = 5.29.6 The mean score for the general malepopulation is u = 5.19. Do hotel managers, on theaverage, differ statistically significantly in femininityscore from men in general? Assume that the standard

Name: please use the calculator method CHAPT40 Student study times. A class
Uploaded: 2024-03-20T06:46:03.000Z
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Description: please use the calculator method CHAPT40 Student study times. A class survey in a large class for(b) What condition not yet mentioned must be met foryour confidence interval to be valid?ingEScal basiswe applyfirst-year college students asked, “About