Weights of adults are normally distributed. A SRS of 26 adults found a mean weight of 169.1 pounds and a standard deviation of 13.3 pounds. A researcher wants to test the claim that the average weight of adults is equal to 175 pounds, and this claim is to be tested using a 5% level of significance. W is the appropriate alternative hypothesis for this test? A. Ha: μ< 175 pounds В. На: X# 175 pounds С. На: р # 175 рounds D. Ha: µ + 175 pounds
Weights of adults are normally distributed. A SRS of 26 adults found a mean weight of 169.1 pounds and a standard deviation of 13.3 pounds. A researcher wants to test the claim that the average weight of adults is equal to 175 pounds, and this claim is to be tested using a 5% level of significance. W is the appropriate alternative hypothesis for this test? A. Ha: μ< 175 pounds В. На: X# 175 pounds С. На: р # 175 рounds D. Ha: µ + 175 pounds
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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Answer 1-3.
Transcribed Image Text:1. Weights of adults are normally distributed. A SRS of 26 adults found a mean
weight of 169.1 pounds and a standard deviation of 13.3 pounds. A researcher
wants to test the claim that the average weight of adults is equal
to 175 pounds, and this claim is to be tested using a 5% level of significance. What
is the appropriate alternative hypothesis for this test?
A. Ha: µ < 175 pounds
B. Ha: X# 175 pounds
C. Ha: p + 175 pounds
D. Ha: µ # 175 pounds
2. A simple random sample of 1000 full-time undergraduate college graduates
found that 220 smoke and 780 do not smoke (based
American Medical Association). A 1% significance level is to be used to test
the claim that the rate of smoking among college graduates is less than the
26% rate for the general population. What is the appropriate alternative
hypothesis for this test?
А. На: р < 0.26
В. На: р < 0.26
С. На: р < 220
D. Ha: µ < 220
data from the
3. Aresearcher is interested in testing the claim that less than 50% of adults in
the United States exercise regularly. Assuming that this hypothesis test can be
done, what is the appropriate alternative hypothesis, Ha?
A. Ha: p > 0.50
В. На: р %3D 0.50
C. H: μ < 50
D. Ha: p < 0.50
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