8. answer all parts below please

part 1) Identify the claim and state H0 and Ha.

part 2) What are H0 and Ha? H0= u1 __ u2, Ha= u1__u2

part 3) Which hypothesis is the claim? Null or alternative ? part 4) Find the critical value(s) and identify the rejection region(s). (Type a integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)

part 5) Select the correct rejection region(s)

part 6) Find the standardized test statistic. (Type a integer or decimal rounded to three decimal places as needed.)

part 7) Decide whether to reject or fail to reject the hypothesis

part 8) Interpret the decision in the context of the original claim below

At the ___% significance level, ___________(there is not/is) enough evidence to reject the personnel director's claim.