Elementary Statistics: Picturing the World (7th Edition)
7th Edition
ISBN: 9780134683416
Author: Ron Larson, Betsy Farber
Publisher: PEARSON
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Chapter 8.2, Problem 6E
(a)
To determine
To find: The critical values when the population variances are equal.
(b)
To determine
To find: The critical values when the population variances are not equal.
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Use the t-distribution table to find the critical value(s) for the indicated alternative hypotheses, level of significance a, and sample
sizes n, and n2. Assume that the samples are independent, normal, and random. Answer parts (a) and (b).
Ha: H1 H2, a= 0.01, n, = 12, n2 = 10
(a) Find the critical value(s) assuming that the population variances are equal.
2.845,2.845
(Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)
(b) Find the critical value(s) assuming that the population variances are not equal.
(Týpe an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)
Use the t-distribution table to find the critical value(s) for the indicated alternative hypotheses, level of significance a, and sample
sizes n, and n2. Assume that the samples are independent, normal, and random. Answer parts (a) and (b).
Ha H >H2; a = 0.05, n, = 14, n = 13
(a) Find the critical value(s) assuming that the population variances are equal.
(Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)
Use the t-distribution table to find the critical value(s) for the indicated alternative hypotheses, level of significance a, and sample sizes n, and n. Assume that the samples are independent, normal, and random. Answer parts (a) and (b).
Hg P2. a= 0.20, n, =6, n2 = 8
(a) Find the critical value(s) assuming that the population variances are equal.
(Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)
(b) Find the critical value(s) assuming that the population variances are not equal.
(Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)
Enter your answer in each of the answer boxes.
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Chapter 8 Solutions
Elementary Statistics: Picturing the World (7th Edition)
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