you wish to test the following claim (Ha) at a significance level of α=0.10. Ho:μ1−μ2=0 Ha:μ1−μ2≠0 You obtain a sample of size n1=88 with a mean of ¯x1=70.4 and a standard deviation of s1=17.9 from the first population. You obtain a sample of size n2=35 with a mean of ¯x2=78.1 and a standard deviation of s2=6.5 from the second population. You will need to determine whether or not to pool so you will use the correct df. What is the critical value for this test? Report answer accurate to three decimal places. critical value = ±

you wish to test the following claim (Ha) at a significance level of α=0.10. Ho:μ1−μ2=0 Ha:μ1−μ2≠0 You obtain a sample of size n1=88 with a mean of ¯x1=70.4 and a standard deviation of s1=17.9 from the first population. You obtain a sample of size n2=35 with a mean of ¯x2=78.1 and a standard deviation of s2=6.5 from the second population. You will need to determine whether or not to pool so you will use the correct df. What is the critical value for this test? Report answer accurate to three decimal places. critical value = ±

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 9PPS

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Question

you wish to test the following claim (Ha) at a significance level of α=0.10.

Ho:μ1−μ2=0
Ha:μ1−μ2≠0

You obtain a sample of size n1=88 with a mean of ¯x1=70.4 and a standard deviation of s1=17.9 from the first population. You obtain a sample of size n2=35 with a mean of ¯x2=78.1 and a standard deviation of s2=6.5 from the second population.

You will need to determine whether or not to pool so you will use the correct df.
What is the critical value for this test? Report answer accurate to three decimal places.
critical value = ±

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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