A new weight-watching company, Weight Reducers International, advertises that those who join will lose an average of 10 pounds after the first two weeks. The standard devia. tion is 2.8 pounds. A random sample of 50 people who joined the weight reduction pro- gram revealed a mean loss of 9 pounds. At the .05 level of significance, can we conclude that those joining Weight Reducers will lose less than 10 pounds? Determine the p-value.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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vaiue.
23. A new weight-watching company, Weight Reducers International, advertises that those
who join will lose an average of 10 pounds after the first two weeks. The standard devia.
tion is 2.8 pounds. A random sample of 50 people who joined the weight reduction pro-
gram revealed a mean loss of 9 pounds. At the .05 level of significance, can we conclude
that those joining Weight Reducers will lose less than 10 pounds? Determine the p-value.
--d nineannle ir b.
Transcribed Image Text:vaiue. 23. A new weight-watching company, Weight Reducers International, advertises that those who join will lose an average of 10 pounds after the first two weeks. The standard devia. tion is 2.8 pounds. A random sample of 50 people who joined the weight reduction pro- gram revealed a mean loss of 9 pounds. At the .05 level of significance, can we conclude that those joining Weight Reducers will lose less than 10 pounds? Determine the p-value. --d nineannle ir b.
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