A researcher is interested in finding a 90% confidence interval for the mean number of times per day that college students text. The study included 148 students who averaged 32.5 texts per day. The standard deviation was 14.8 texts. Round answers to 3 decimal places where possible. a. With 90% confidence the population mean number of texts per day is between and texts. h. If many øroups of 148 randomly selected members are studied, then a different confidence interval
A researcher is interested in finding a 90% confidence interval for the mean number of times per day that college students text. The study included 148 students who averaged 32.5 texts per day. The standard deviation was 14.8 texts. Round answers to 3 decimal places where possible. a. With 90% confidence the population mean number of texts per day is between and texts. h. If many øroups of 148 randomly selected members are studied, then a different confidence interval
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A researcher…
![A researcher is interested in finding a 90% confidence interval for the mean number of times per day that
college students text. The study included 148 students who averaged 32.5 texts per day. The standard
deviation was 14.8 texts. Round answers to 3 decimal places where possible.
a. With 90% confidence the population mean number of texts per day is between
and
texts.
b. If many groups of 148 randomly selected members are studied, then a different confidence interval
would be produced from each group. About
percent of these confidence intervals will contain
the true population number of texts per day and about
percent will not contain the true
population mean number of texts per day.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F133b3f04-caf2-4b3a-934e-f6911b8fea38%2F9b7866b2-c2a7-434d-99c1-dfab4a27019c%2Fpnrobrh_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A researcher is interested in finding a 90% confidence interval for the mean number of times per day that
college students text. The study included 148 students who averaged 32.5 texts per day. The standard
deviation was 14.8 texts. Round answers to 3 decimal places where possible.
a. With 90% confidence the population mean number of texts per day is between
and
texts.
b. If many groups of 148 randomly selected members are studied, then a different confidence interval
would be produced from each group. About
percent of these confidence intervals will contain
the true population number of texts per day and about
percent will not contain the true
population mean number of texts per day.
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