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A researcher is interested in finding a 95% confidence interval for the mean number of times per day that college students text. The study included 120 students who averaged 25.8 texts per day. The standard deviation was 13.5 texts. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a ? distribution. b. With 95% confidence the population mean number of texts per day is between and texts. c. If many groups of 120 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.

A researcher is interested in finding a 95% confidence interval for the mean number of times per day that college students text. The study included 120 students who averaged 25.8 texts per day. The standard deviation was 13.5 texts. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a ? distribution. b. With 95% confidence the population mean number of texts per day is between and texts. c. If many groups of 120 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.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A researcher is interested in finding a 95% confidence interval for the mean number of times per day that college students text. The study included 120 students who averaged 25.8 texts per day. The standard deviation was 13.5 texts. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a ? distribution. b. With 95% confidence the population mean number of texts per day is between and texts. c. If many groups of 120 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.
Transcribed Image Text:A researcher is interested in finding a 95% confidence interval for the mean number of times per day that college students text. The study included 120 students who averaged 25.8 texts per day. The standard deviation was 13.5 texts. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a ? distribution. b. With 95% confidence the population mean number of texts per day is between and texts. c. If many groups of 120 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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