Question

Suppose a poll was taken of 1000 randomly selected voters and the results showed that 53% support Congress’ Jobs Creation Bill. You want to test the hypothesis that the majority of likely voters support Congress’ Bill; in other words to test the hypothesis H₀: π ≤ 0.50 versus H₁ : π > 0.50, at .10 level of significance. What is (are) the critical value(s) for the test? Choose the best answer.

Select one:

1.28

± 1.96

± 1.645

1.96

2.33

Answer 1

1.28

H0: π ≤ 0.50 versus H1 : π > 0.50 .................Right tailed test.

Therefore, Z critical value =1.28 .............by using Z table or Excel =NORMSINV(1-0.1)