Question

1.

Question 1 3 pts The a two-tailed hypothesis test o Is related to a confidence interval at the same level of alpha. O Is expressed in a probability framework with a chance of being wrong in our conclusion. O Has an alternative hypothesis that uses Not Equal in the expression. O All of the answers are true.

2. For this problem you will need a t-table.  What is the t-value needed for the critical value for a one-tailed upper hypothesis test with a sample size = 40 and alpha =.05?

3. Each year Delta Dental does a survey of parents concerning the tradition of the Tooth Fairy.  A random sample of 1,058 parents were asked about how much money they leave for a tooth and questions concerning how their child responded to the concept of the Tooth Fairy.  In one question, 508 parents indicated that their child saved the money they got for their tooth.

You are asked to Test to see if this proportion is different from .5.  Use an alpha level of .05.

What is the Test Statistic (z*) for this test?

Answer 1

1 correct option © in a two tailed hypothesis test: I has a alternative hypothesis that uses Not I equal in the Expression. 12 for upper hp pothesis test at a 2005, df = n) =40*4 = 39 critical values dcrit a fo.05,39 = 1 1. 685] 1 from ttable] (3) Here DEO-DO, P=0%2608058 - 0.4802 Xoooos Hypotheses a H. : P = 0. D . : P + bxJ0 . Test statistic z test Z A- .2 0.4-802-0. VPL1-P) Vea sol 1-0.50) 1058 -1.29 puaine at 2=-1129 . pualue = P12>1-1.291) CI - PL 25 1029) El-0,9015 70.09857 since pualue >000s, we failed to regect to. conclusion: There is not sufficient evidence to support the claim and we conclude that proportion is not different from 0.5o.