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...

Only answer part B. Obviously part a is answered

Extracted 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 30.482 V and 34.518 texts. O 30.486 O 34.514 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.