Mathematics, 24.04.2020 03:01 jeffreyaxtell4039
You work for a consumer advocate agency and want to find the mean repair cost of a washing machine. As part of your study, you randomly select 40 repair costs and find the mean to be $100.00. From past studies, you assume that the σ is $17.50.
a. Construct and interpret a 90% confidence interval for the true population mean repair cost.
Answers: 2
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