Testing of hypotheses Ho : ? = 45 vs. H1 : ? 45 when the population standard deviation is known, the appropriate test is:
A)t-test
B)Z test
C)Chi-square test
D)F test

Question

Testing of hypotheses Ho : ? = 45 vs. H1 : ? > 45 when the population standard deviation is known, the appropriate test is:
A)t-test
B)Z test
C)Chi-square test
D)F test

Quizplus · Accepted Answer

When the population standard deviation is known and the hypothesis test is about the population mean, the appropriate test is the Z test. The t-test is used when the population standard deviation is unknown, the Chi-square test is for categorical data, and the F test is for comparing variances.

Testing of Hypotheses Ho : ? = 45 Vs