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

 

H0 is rejected when the calculated p-value is less than the critical value of the test statistic.
In a right-tailed test, we reject H0 when the test statistic exceeds the critical value.
The critical value is based on the researcher's chosen level of significance.

If H0: %u03BC %u2264 100 and H1: %u03BC > 100, then the test is right-tailed.

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Karol E.
Karol E.Lv8
18 Mar 2021
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Related textbook solutions

Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

Related questions

Consider the following hypothesis test:

H0: µ = 20
Ha: µ < 20
A sample of 50 provided a sample mean of 19.4. The population standard deviation is 2.
a. Compute the value of the test statistic (to 2 decimals).

b. What is the p-value (to 3 decimals)?

c. Using a = .05, can it be concluded that the population mean is less than 20?

d. Using a = .05, what is the critical value for the test statistic?

e. State the rejection rule: Reject H0 if z is the critical value.
f. Using a = .05, can it be concluded that the population mean is less than 20

Which of the following is NOT a criterion for making a decision in a hypothesis test?
A) If the test statistic falls within the critical region, the decision is to reject the null hypothesis.
B) If a confidence interval does not include a claimed value of a population parameter, the decision is to reject the null hypothesis.
C) If the P-value is less than 0.05, the decision is to reject the null hypothesis. Otherwise, we fail to reject the null hypothesis.
D) If P-value ≤ α, the decision is to reject the null hypothesis. Otherwise, we fail to reject the null hypothesis.

Which of the following is NOT a criterion for making a decision in a hypothesis test? Choose the correct answer below.

A.) If the test statistic falls within the critical region, the decision is to reject the null hypothesis.

B.) If a confidence interval does not include a claimed value of a population parameter, the decision is to reject the null hypothesis.

C.) If the P-value is less than 0.05, the decision is to reject the null hypothesis. Otherwise, we fail to reject the null hypothesis.

 

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