Elementary Statistics: Picturing the World (7th Edition)
7th Edition
ISBN: 9780134683416
Author: Ron Larson, Betsy Farber
Publisher: PEARSON
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Chapter 8, Problem 8.2.13RE
To determine
To test: Whether the
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In Exercises 11 –14, test the claim about the difference between two population means u1 and u2 at the level of significance a. Assume the samples are random and independent, and the populations are normally distributed.
10.
Test the claim about the population mean
μ
at the level of significance
α.
Assume the population is normally distributed.
Claim:
μ<4915;
α=0.05
Sample statistics:
x=5017,
s=5613,
n=55
Question content area bottom
Part 1
What are the null and alternative hypotheses?
H0:
muμ
greater than or equals≥
4915
4915
Ha:
muμ
less than<
4915
4915
(Type integers or decimals. Do not round.)
Part 2
Find the standardized test statistic t.
t=enter your response here
(Round to two decimal places as needed.)
Test the claim about the difference between two population means m1 and m2 at the level of significance a. Assume the samples are random and independent, and the populations are normally distributed. If convenient, use technology.11.Claim:
m1=m2; a=0.1.Population statistics: s1=3.4 and s2=1.5Sample statistics: x1=16, n1=29 and x2=14, n2=28
Chapter 8 Solutions
Elementary Statistics: Picturing the World (7th Edition)
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