Q8A

#1 A golf analyst claims that the standard deviation of the 18-hole scores for a golfer is

atmost2.4 strokes. State H₀ and H_a in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning.

#2 The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject

H_o when the level of significance is (a) =0.01, (b) =0.05, and (c) =0.10.

P= 0.0719

#3 Find the P-value for the indicated hypothesis test with the given standardized test statistic, z. Decide whether to reject H0 for the given level of significance .

Right-tailed test with test statistic z=1.71 and = 0.08.

#4 Find the critical value(s) and rejection region(s) for the type of z-test with level of significance

. Include a graph with your answer.

Two-tailed test, =0.09

#5 Test the claim about the population mean, , at the given level of significance using the given sample statistics.

Claim: 5000; =0.02; =340. Sample statistics: x=4800, n=33

(a) Identify the null and alternative hypotheses

(b) The standardized test statistic is

(c) Determine the critical value(s).

(d) Determine the outcome and conclusion of the test from options below.

1. Failtoreject H0. At the 2% significance level, there isnot enough evidence to reject the claim.

2. Reject H0. At the 2% significance level, there is enough evidence to support the claim.

3. Failtoreject H0. At the 2% significance level, there isnot enough evidence to support the claim.

4. Reject H0. At the 2% significance level, there is enough evidence to reject the claim