Elementary Statistics ( 3rd International Edition ) Isbn:9781260092561
3rd Edition
ISBN: 9781259969454
Author: William Navidi Prof.; Barry Monk Professor
Publisher: McGraw-Hill Education
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Chapter 15.2, Problem 17E
a.
To determine
To show:The median of given samples are equal.
b.
To determine
To find:The value of
c.
To determine
To find:The p-value and whether to reject the hypothesis
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Consider the following hypothesis statement using
α=0.01
and data from two independent samples. Assume the population variances are equal and the populations are normally distributed. Complete parts a and b.
H0: μ1−μ2=0
x1=14.5
x2=13.0
H1: μ1−μ2≠0
s1=2.6
s2=3.3
n1=22
n2=15
a. Calculate the appropriate test statistic and interpret the result.
The test statistic is?
The critical value(s) is(are)?
b. Identify the p-value from part a and interpret the result.
Consider the following hypothesis statement using
α=0.05
and data from two independent samples. Assume the population variances are equal and the populations are normally distributed. Complete parts a and b.
H0: μ1−μ2≤11
x1=71.4
x2=58.5
H1: μ1−μ2>11
s1=19.9
s2=18.3
n1=15
n2=20
a. Calculate the appropriate test statistic and interpret the result.
1. The test statistic is
2. The critical value(s) is(are)
b. . Identify the p-value from part a and interpret the result.
1.. Identify the p-value from part a and interpret the result.
.A sample of 9 measurements, randomly selected from a normally distributed population,
resulted in x= 2.6, and s= 0.9 Conduct a hypothesis test to verify the claim that the
population mean is greater than 2.5 . Use a=.05
Chapter 15 Solutions
Elementary Statistics ( 3rd International Edition ) Isbn:9781260092561
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