Answer:
No, we cannot conclude anything about 0.10
Yes, they have made the same decision.
Step-by-step explanation:
Consider the provided information.
Part (A)
They based this conclusion on a test using α = 0.05. Would they have made the same decision at α = 0.10
A significance level of 0.05 indicates a 5% risk of concluding that a difference exists
From the normal table the critical value is Z(0.05) = 1.645 and we accept null hypothesis.
If α = 0.1, the critical value is Z(0.1)=1.28
1.28 is less than 1.645.
Therefore, we cannot conclude anything about 0.10
Part (B)
α = 0.01, the critical value is Z(0.01)=2.33
The critical value of α = 0.05 is 1.645 which is less than 2.33,
So we would again reject the null hypothesis.
Hence, they have made the same decision.
