For a test of a mean which of the following is incorrect a T

For a test of a mean, which of the following is incorrect?

a. The critical value is based on the researcher\'s chosen level of significance.

b. H₀ is rejected when the calculated p-value is less than the critical value of the test statistic.

c. If H₀: 100 and H₁: > 100, then the test is right-tailed.

d. In a right-tailed test, we reject H₀ when the test statistic exceeds the critical value.

Solution

Option b: it is incorrect.

Correct statement:

H0 is rejected when the calculated p-value is less than level of significance. P-value of the test is based on the value of test statistics.

Option a, c, and d are correct.