Question

For each of the following​ situations, find the critical​ value(s) for z or t.​a) H0​:pequals0.9vs. HA​:pnot equals0.9at alphaequals0.01

Answer 1

Explanation:

Required: Find the critical value for z or t.

Null Hypothesis: P = 0.9

Alternative Hypothesis: P ≠ 0.9

α = 0.01 implies a confidence level of 99%

The critical probability by formula, is CP = 1 - (α/2)

CP = 1 - 0.01/2 = 0.995

Using 10 degrees of freedom on the table of percentage points of the t-distribution, the critical t-statistic corresponds to 3.17