In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1equalsnot attractive; 10equalsextremely attractive). Construct a confidence interval using a 99% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females?
7, 7, 3, 8, 5, 6, 7, 8, 7, 9, 4, 9
Question content area bottom
Part 1
What is the confidence interval for the population mean mu?
enter your response hereless thanmuless than
enter your response here (Round to one decimal place as needed.)
Part 2
What does the confidence interval tell about the population of all adult females? Select the correct choice below and, if necessary, fill in the answer box(es) to complete your choice.
A.
We are 99% confident that the interval from
enter your response here to
enter your response here actually contains the true mean attractiveness rating of all adult females.
(Round to one decimal place as needed.)
B.
We are confident that 99% of all adult females have attractiveness ratings between
enter your response here and
enter your response here.
(Round to one decimal place as needed.)
C.
The results tell nothing about the population of all adult females, because participants in speed dating are not a representative sample of the population of all adult females.
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