(TEST IF HYPOTHESIS)

HMAR DIAIDIICS AND PROBABILITY 5. A test is made of Ho : H = 50 versus H1 : M =/= 50 is performed using a = 0.01 significance level. The value of the test statistic is z = -2.68 and it is concluded that we fail to reject Ho . If the true value of u is 65, is the conclusion a Type | Error, Type II error, or a correct decision? a. Type I b. Type II c. Correct Decision 6. A test is made of Ho : H = 50 versus H1 : H =/= 50 is performed using a = 0.01 significance level. The value of the test statistic is z = -2.68 and it is concluded that we fail to reject Ho If the true value of u is 50, is the conclusion a Type | Error, Type ll error, or a correct decision? a. Type I b. Type II c. Correct Decision 7. In a hypothesis test, the alternative hypothesis is always a statement of equality. a. True b. False 8. At the Chrysler manufacturing plant, there is a part that is supposed to weigh precisely 19 pounds. The engineers take a sample of parts and want to know if they meet the weight specifications. What are our null and alternative hypotheses? a. Ho : H = 17, Ha : M # 19 b. Ho : N = 19, Ha : N # 19 C. Ho : H = 19, Ha : M # 17 d. Ho : H = 17, Ha : H # 17 9. Use the notation to state the alternative hypothesis and null hypothesis: "Less than 4% of high school students take Statistics." a. Ho : X 2 4% and H1 : X > 4% b. Ho : XS 4% and H1 : X 4% and H1 : XS 4% 10. The null and alternative hypothesis can be the same. a. Yes b. No c. Maybe d. All the above 2'90 2202Directions: Read and understand each quest 1. What is definition of null hypothesis? a. The independent variable has no effect on the dependent variable for the population b. The independent variable does have an effect on the dependent variable c. The dependent variable has no effect on the independent variable d. The dependent variable does have effect on the independent variable 2. If the alpha level is increased from 0.01 to 0.05, then the boundaries for the critical region move farther away from the center of the distribution. a. True b. False 3. A test is made of Ho : H = 17 versus H1 : H