A random sample of 70 observations from a normally distributed population possesses a sample mean equal to 26.2 and a sample standard deviation equal to 4.1. a. Find an approximate 95% confidence interval for ?. b. What do you mean when you say that a confidence coefficient is .95? c. Find an approximate 99% confidence interval for ?. parts a,b,c
A random sample of 70 observations from a normally distributed population possesses a sample mean equal to 26.2 and a sample standard deviation equal to 4.1. a. Find an approximate 95% confidence interval for ?. b. What do you mean when you say that a confidence coefficient is .95? c. Find an approximate 99% confidence interval for ?. parts a,b,c
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 random sample of 70 observations from a
a. Find an approximate 95% confidence interval for ?.
b. What do you mean when you say that a confidence coefficient is .95?
c. Find an approximate 99% confidence interval for ?.
parts a,b,c
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