A researcher is interested in finding a 90% confidence interval forthe mean number of times per day that college students text. Thestudy included 122 students who averaged 25.2 texts per day. Thestandard deviation was 14.7 texts. Round answers to 3 decimalplaces where possible.a. To compute the confidence interval use adistribution.b. With 90% confidence the population mean number of texts perday is betweenandtexts.c. If many groups of 122 randomly selected members are studied,then a different confidence interval would be produced from eachgroup. Aboutpercent of these confidence intervals willcontain the true population number of texts per day and aboutpercent will not contain the true population mean numberof texts per day.

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Description: A researcher is interested in finding a 90% confidence interval forthe mean number of times per day that college students text. Thestudy included 122 students who averaged 25.2 texts per day. Thestandard deviation was 14.7 texts. Round answers to 3

The formula to construct the confidence interval at 90% confidence level is given by : x-tα/2s2n…

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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 122 students who averaged 25.2 texts per day. The standard deviation was 14.7 texts. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a V distribution.

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 122 students who averaged 25.2 texts per day. The standard deviation was 14.7 texts. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a V distribution.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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