Consider the following situation.
a right-tailed test with α = 0.1
Find the appropriate rejection regions. (Round your answers to two decimal places. If the test is one-tailed, enter NONE for the unused region.)
z >
z <
State your conclusion if the observed test statistic was z = 2.17. If appropriate, provide a measure of reliability for your conclusion.
a. The null hypothesis is not rejected.
b. The null hypothesis is rejected at the 0.1% level.
c. The null hypothesis is rejected at the 10% level.
Solution,
This is right tailed test,
α = 0.1
P( z > z ) = 0.1
= 1 - P(Z < z) = 0.1
= P(Z < z) = 1 - 0.1
= P(Z < z ) = 0.9
= P(Z < 1.28 ) = 0.9
z > 1.28
test statistic = z = 2.17
test statistic > critical value
c. The null hypothesis is rejected at the 10% level.
Consider the following situation. a right-tailed test with α = 0.1 Find the appropriate rejection regions....
1.You are performing a left-tailed z-test If α=.005α=.005, and your test statistic is z=−2.59, do you: Reject Null Hypothesis Fail to Reject Null Hypothesis You are performing a left-tailed z-test If α=.10, and your test statistic isz=-2.01, do you: Reject Null Hypothesis Fail to Reject Null Hypothesis You are performing a right-tailed t-test with a sample size of 15 If α=.01, and your test statistic is t=3.02t=3.02, do you: Reject Null Hypothesis Fail to Reject Null Hypothesis You are performing...
Find the critical value(s) of t that specify the rejection region for the situation given. (Round your answers to three decimal places. If the test is one-tailed, enter NONE for the unused region.) a two-tailed test with α = 0.01 and 15 df
Find the critical value(s) and rejection region(s) for the indicated t-test, level of significance α, and sample size n. Right-tailed test, α=0.01, n=23 The critical value(s) is/are _______ Determine the rejection region(s), Select the correct choice below and fill in the answer box(es) within your choice
You are performing a two-tailed test. If α = .004 , find the positive critical value, to three decimal places. zα/2 = You are performing a left-tailed z-test If α=.025, and your test statistic is z=−1.75, do you: Reject Null Hypothesis Fail to Reject Null Hypothesis
Find the critical value(s) and rejection region(s) for the type of z-test with level of significance a. Include a graph with your answer. Two-tailed test, α = 0.04 The critical value(s) is/are z Round to two decimal places as needed. Use a comma to separate answers as needed.) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. Round to two decimal places as needed.) A. The rejection regions are z< and z>...
b.) find the critical values and rejection regions c.) find the standardized test statistic, z d.) decide whether to reject or fail to reject e.) interpret In a survey af 1000 drivers from Region A, 855 wear a seat belt. In a survey of 1000 drivers from Region B, 909 wear a seat bet. At a0.10, is there evidence to support the claim that the proportion of drivers who wear seat belts in Region A is less than the proportion...
Consider the following hypothesis test. H0: μ ≤ 50 Ha: μ > 50 A sample of 60 is used and the population standard deviation is 8. Use the critical value approach to state your conclusion for each of the following sample results. Use α = 0.05. (Round your answers to two decimal places.) (a)x = 52.5 Find the value of the test statistic. State the critical values for the rejection rule. (If the test is one-tailed, enter NONE for the...
You are performing a right-tailed t-test with a sample size of 33 If α=.10, and your test statistic is t=1.83, do you: Fail to Reject Null Hypothesis Reject Null Hypothesis Please provide a step-by-step. Thank you.
You are performing a two-tailed z-test If a = 0.1, and your test statistic is z = - 3.4, do you: Reject Null Hypothesis O Fail to Reject Null Hypothesis
You are performing a left-tailed z-test . If α=.005α=.005, and your test statistic is z=−1.79z=-1.79, do you: fail to reject the null hypothesis reject the null hypothesis