GROUP 2 You work for a consumer advocate ogency and want to find the mean repair cost of a washing machine, As part of your study, you randomly select 29 repair costs and find the mean to be $100.00 and o is $17.50. a. Construct a 90% confidence interval. b. Construct a 95% confidence interval. c. Construct a 99% confidence interval.

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GROUP 2
You work for a consumer advocate ogency and
want to find the mean repair cost of a washing
machine. As part of your study,. you randomly
select 29 repair costs and find the
mean to be $100.00 and o is $17.50.
a. Construct a 90% confidence interval.
b. Construct a 95% confidence interval.
c. Construct a 99% confidence interval.
Transcribed Image Text:GROUP 2 You work for a consumer advocate ogency and want to find the mean repair cost of a washing machine. As part of your study,. you randomly select 29 repair costs and find the mean to be $100.00 and o is $17.50. a. Construct a 90% confidence interval. b. Construct a 95% confidence interval. c. Construct a 99% confidence interval.
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