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A researcher is interested in finding a 98% confidence interval for the mean number minutes students are concentrating on their professor during a one hour statistics lecture. The study included 130 students who averaged 32.1 minutes concentrating on their professor during the hour lecture. The standard deviation was 12.8 minutes. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a v distribution. b. With 98% confidence the population mean minutes of concentration is between and minutes. c. If many groups of 130 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 mean minutes of concentration and about percent will not contain the true population mean minutes of concentration.

A researcher is interested in finding a 98% confidence interval for the mean number minutes students are concentrating on their professor during a one hour statistics lecture. The study included 130 students who averaged 32.1 minutes concentrating on their professor during the hour lecture. The standard deviation was 12.8 minutes. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a v distribution. b. With 98% confidence the population mean minutes of concentration is between and minutes. c. If many groups of 130 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 mean minutes of concentration and about percent will not contain the true population mean minutes of concentration.

MATLAB: An Introduction with Applications
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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Need help with this problem. Parts a,b,c. Any additional info regarding how to calculate on ti-84 plus is a bonus. Round to 3 decimals where possible. Thanks! 

A researcher is interested in finding a 98% confidence interval for the mean number minutes students are concentrating on their professor during a one hour statistics lecture. The study included 130 students who averaged 32.1 minutes concentrating on their professor during the hour lecture. The standard deviation was 12.8 minutes. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a t o distribution. b. With 98% confidence the population mean minutes of concentration is between and minutes. c. If many groups of 130 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 mean minutes of concentration and about percent will not contain the true population mean minutes of concentration.
Transcribed Image Text:A researcher is interested in finding a 98% confidence interval for the mean number minutes students are concentrating on their professor during a one hour statistics lecture. The study included 130 students who averaged 32.1 minutes concentrating on their professor during the hour lecture. The standard deviation was 12.8 minutes. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a t o distribution. b. With 98% confidence the population mean minutes of concentration is between and minutes. c. If many groups of 130 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 mean minutes of concentration and about percent will not contain the true population mean minutes of concentration.
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