A researcher is interested in finding a 98% confidence interval for the mean number of times per day that college students text. The study included 145 students who averaged 25.4 texts per day. The standard deviation was 15.3 texts. Round answers to 3 decimal places where possible. b. With 98% confidence the population mean number of texts per day is between ____ and _____ texts.
Added by Kendra E.
Step 1
We are given the sample mean (x̄) = 25.4, sample size (n) = 145, and sample standard deviation (s) = 15.3. Show more…
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