In 2007 a Harvard psychologist set out to test her theory that ‘‘Mind-Set Matters.”1 She recruited 75 female maids2 working in different hotels to participate in her study, and informed 41 maids (randomly chosen) that the work they do satisfies the Surgeon General’s recommendations for an active lifestyle (which is true), giving the maids examples on how their work qualifies as good exercise. The other 34 maids were told nothing. After four weeks, the exercise habits of the two groups had not changed, but the informed group had lost an average of 1.79 lbs (s=2.88) and the uninformed group had lost an average of 0.2 lbs (s=2.32). The data are stored in MindsetMatters. Based on this study, does ‘‘Mind-Set Matter”? In other words, for maids, does simply thinking they are exercising more actually cause them to lose more weight? Click here for the dataset associated with this question. 1Crum, A. and Langer, E., ‘‘Mind-SetMatters: Exercise and the Placebo Effect,” Psychological Science, 2007; 18: 165-171. 2Maids with missing values for weight change have been removed. State the null and alternative hypotheses. Your answer should be an expression composed of symbols: =,≠,<,>,μ,μ1,μ2,p,p1,p2,ρ,p^,p^1,p^2,r. Use subscripts 1 for maids in the informed group and 2 for maids in the uninformed group. H0: vs Ha:Edit Give the test statistic and the p-value. Round your answer for the test statistic to two decimal places and your answer for the p-value to three decimal places. test statistic = Enter your answer; test statistic p-value = Enter your answer; p-value For maids, does simply thinking they are exercising more actually cause them to lose more weight? Test at a 5% level. Yes No

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 28PPS

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Chapter 6, Section 4-HT, Exercise 218 - MathPad

Mind-Set Matters

In 2007 a Harvard psychologist set out to test her theory that ‘‘Mind-Set Matters.”¹ She recruited 75 female maids² working in different hotels to participate in her study, and informed 41 maids (randomly chosen) that the work they do satisfies the Surgeon General’s recommendations for an active lifestyle (which is true), giving the maids examples on how their work qualifies as good exercise. The other 34 maids were told nothing. After four weeks, the exercise habits of the two groups had not changed, but the informed group had lost an average of 1.79 lbs (s=2.88) and the uninformed group had lost an average of 0.2 lbs (s=2.32). The data are stored in MindsetMatters. Based on this study, does ‘‘Mind-Set Matter”? In other words, for maids, does simply thinking they are exercising more actually cause them to lose more weight?

Click here for the dataset associated with this question.

¹Crum, A. and Langer, E., ‘‘Mind-SetMatters: Exercise and the Placebo Effect,” Psychological Science, 2007; 18: 165-171.
²Maids with missing values for weight change have been removed.

State the null and alternative hypotheses. Your answer should be an expression composed of symbols: =,≠,<,>,μ,μ1,μ2,p,p1,p2,ρ,p^,p^1,p^2,r.

Use subscripts 1 for maids in the informed group and 2 for maids in the uninformed group.

H0: vs Ha:Edit

Give the test statistic and the p-value.

Round your answer for the test statistic to two decimal places and your answer for the p-value to three decimal places.

test statistic = Enter your answer; test statistic

p-value = Enter your answer; p-value

For maids, does simply thinking they are exercising more actually cause them to lose more weight? Test at a 5% level.

Yes

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