Question

Population 1 Population 2 n 20 22 x 49.1 47.9 s 6.8 10.9 Use the given statistics to complete parts (a) and (b). Assume that the populations are normally distributed. (a) Test whether ?1 > ?2 at the ? = 0.05 level of significance for the given sample data. (b) Construct a 90% confidence interval about ?1 - ?2. (a) Identify the null and alternative hypotheses for this test. A. H0: ?1 < ?2 H1: ?1 = ?2 B. H0: ?1 = ?2 H1: ?1 > ?2 C. H0: ?1 ? ?2 H1: ?1 = ?2 D. H0: ?1 = ?2 H1: ?1 ? ?2 E. H0: ?1 > ?2 H1: ?1 = ?2 F. H0: ?1 = ?2 H1: ?1 < ?2 Find the test statistic for this hypothesis test. (Round to two decimal places as needed.) Determine the P-value for this hypothesis test. (Round to three decimal places as needed.) State the conclusion for this hypothesis test. A. Reject H0. There is sufficient evidence at the ? = 0.05 level of significance to conclude that ?1 > ?2. B. Do not reject H0. There is not sufficient evidence at the ? = 0.05 level of significance to conclude that ?1 > ?2. C. Reject H0. There is not sufficient evidence at the ? = 0.05 level of significance to conclude that ?1 > ?2. D. Do not reject H0. There is sufficient evidence at the ? = 0.05 level of significance to conclude that ?1 > ?2. (b) The 90% confidence interval about ?1 - ?2 is the range from a lower bound of to an upper bound of .

          Population 1 Population 2
n 20 22
x 49.1 47.9
s 6.8 10.9
Use the given statistics to complete parts (a) and (b). Assume that the populations are normally distributed.
(a) Test whether ?1 > ?2 at the ? = 0.05 level of significance for the given sample data.
(b) Construct a 90% confidence interval about ?1 - ?2.
(a) Identify the null and alternative hypotheses for this test.
A. H0: ?1 < ?2 H1: ?1 = ?2
B. H0: ?1 = ?2 H1: ?1 > ?2
C. H0: ?1 ? ?2 H1: ?1 = ?2
D. H0: ?1 = ?2 H1: ?1 ? ?2
E. H0: ?1 > ?2 H1: ?1 = ?2
F. H0: ?1 = ?2 H1: ?1 < ?2
Find the test statistic for this hypothesis test.
(Round to two decimal places as needed.)
Determine the P-value for this hypothesis test.
(Round to three decimal places as needed.)
State the conclusion for this hypothesis test.
A. Reject H0. There is sufficient evidence at the ? = 0.05 level of significance to conclude that ?1 > ?2.
B. Do not reject H0. There is not sufficient evidence at the ? = 0.05 level of significance to conclude that ?1 > ?2.
C. Reject H0. There is not sufficient evidence at the ? = 0.05 level of significance to conclude that ?1 > ?2.
D. Do not reject H0. There is sufficient evidence at the ? = 0.05 level of significance to conclude that ?1 > ?2.
(b) The 90% confidence interval about ?1 - ?2 is the range from a lower bound of to an upper bound of .

Population 1 Population 2
n 20 22
x 49.1 47.9
s 6.8 10.9
Use the given statistics to complete parts (a) and (b). Assume that the populations are normally distributed.
(a) Test whether ?1 > ?2 at the ? = 0.05 level of significance for the given sample data.
(b) Construct a 90% confidence interval about ?1 - ?2.
(a) Identify the null and alternative hypotheses for this test.
A. H0: ?1 < ?2 H1: ?1 = ?2
B. H0: ?1 = ?2 H1: ?1 > ?2
C. H0: ?1 ? ?2 H1: ?1 = ?2
D. H0: ?1 = ?2 H1: ?1 ? ?2
E. H0: ?1 > ?2 H1: ?1 = ?2
F. H0: ?1 = ?2 H1: ?1 < ?2
Find the test statistic for this hypothesis test.
(Round to two decimal places as needed.)
Determine the P-value for this hypothesis test.
(Round to three decimal places as needed.)
State the conclusion for this hypothesis test.
A. Reject H0. There is sufficient evidence at the ? = 0.05 level of significance to conclude that ?1 > ?2.
B. Do not reject H0. There is not sufficient evidence at the ? = 0.05 level of significance to conclude that ?1 > ?2.
C. Reject H0. There is not sufficient evidence at the ? = 0.05 level of significance to conclude that ?1 > ?2.
D. Do not reject H0. There is sufficient evidence at the ? = 0.05 level of significance to conclude that ?1 > ?2.
(b) The 90% confidence interval about ?1 - ?2 is the range from a lower bound of to an upper bound of .

Added by Jeffery W.

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