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 123 students who averaged 40.3 texts per day. The standard deviation was 23.2 texts. a. To compute the confidence interval use a distribution. b. With 90% confidence the population mean number of texts per day is between and texts. c. If many groups of 123 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 num
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 123 students who averaged 40.3 texts per day. The standard deviation was 23.2 texts. a. To compute the confidence interval use a distribution. b. With 90% confidence the population mean number of texts per day is between and texts. c. If many groups of 123 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 num
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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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 123 students who averaged 40.3 texts per day. The standard deviation was 23.2 texts.
a. To compute the confidence interval use a distribution.
b. With 90% confidence the population mean number of texts per day is between and texts.
c. If many groups of 123 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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