Fundamentals of Statistics (5th Edition)
5th Edition
ISBN: 9780134508306
Author: Michael Sullivan III
Publisher: PEARSON
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Chapter B.3, Problem 8AYU
a.
To determine
To compute: The test statistic.
b.
To determine
To find: The critical valuefor the given test at
c.
To determine
To draw: The chi-square distribution.
To depict: The critical region.
d.
To determine
To claim: The rejection of null hypothesis.
To find: The reason.
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An independent random sample is selected from an approximately normal population with an unknown standard deviation. Find the p-value for the given sample size and test statistic. Also determine if the null hypothesis would be rejected at α = 0.05.
(a) n=11,T =1.91
To test Ho: o = 1.7 versus H₁: o>1.7, a random sample of size n = 22 is obtained from a population that is known to
be normally distributed.
(a) If the sample standard deviation is determined to be s = 1.9, compute the test statistic.
(b) If the researcher decides to test this hypothesis at the a= 0.01 level of significance, use technology to determine
the P-value.
(c) Will the researcher reject the null hypothesis?
(a) The test statistic is x =
(Round to two decimal places as needed.)
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To test Ho: o = 2.4 versus H₁: o>2.4, a random sample of size n=23 is obtained from a population that is known to be normally distributed.
(a) If the sample standard deviation is determined to be s= 3.3, compute the test statistic.
(b) If the researcher. decides to test this hypothesis at the x = 0.05 level of significance, use technology to determine the P-value.
(c) Will the researcher reject the null hypothesis?
(a) The test statistic is x² =.
A
(Round to two decimal places as needed.)
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Chapter B.3 Solutions
Fundamentals of Statistics (5th Edition)
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