Wha isthe \"bestesimate\" of the population proportion? a) (,64814, 75185) b) .7

Question

Wha isthe "bestesimate" of the population proportion? a) (,64814, 75185) b) .7 c)210 d) 300 20 Determine the margin of error. a)5.2% d) cannot be determined 21. c)3.5% b) 10.4% For the sample used for this estimate, how many students used a cell phone when leaving ci d) cannot be determined 22. e) 300 b) 210 In doing an hypothesis test the experimenter tries to reject one of the hypotheses and by doir he ultimately accepts the other. If the experimenter has shown a statistically significant resu 23. what must be his conclusion? a) reject He and reject Hs b) reject Ho and accept H c) accept Ho and accept H d) accept H, and reject Ha Which of the following describe a type I error? 24. I. rejecting a true null hypothesis Il. accepting a false null hypothesis III. rejecting a true alternative hypothesis v. accepting a false alternative hypothesis ?) I only b) II only c) both l and 11 d) both l and IV If the alpha level is set at 1% then what is the probability of making a type I error? a)190 25, b) 0.5% c) 99% d) unknown T-Test H25.000 t,3350 Questions 26 to 32 refer to Figure 2. 26. Which type of hypothesis test does this output reflect? 27. Calculate the standard error (SE) for this test PE. 3694 -=25. 1 0 1 Sx-2.331 a)?TT, nondirectional b) ITT, directional c) 2TT, nondirectional In ,9.008 8) 0.3036 b) 0.3350 )2.3319 d) 3.2680 Fi ur 28. What is the probability that a sample mean greater than 25.1017 of size 59 comes from a sampling distribution with a mean of 25 and a standard deviation of 0.3036? c) 0.3350 b) 0.05 d) 0.3694 Using the output, what is the largest p-value for which the null hypothesis would be rejected? a) 1% 29. b) 5% c) 0.3694 d) 0.3350 30. Which number represents the sample summary mean? a)25 b) 0.3694 c)25.1017 d) 0.3350 31. What value represents the largest significance that the null hypothesis can be rejected.? a) 0.05 b) 0.3350 c) 0.3694 d) 2.3319 32 Are the results ofthe experiment statistically significant at an alpha level of 5%? a) No b) Yes, at an alpha level of 5% c) Yes, at an alpha level of 1%

Explanation / Answer

26:

Alternative hypothesis shows that test is right tailed.

Correct option is b.

27:

Standrad error is 2.3319.

So se=2.3319

28:

It is eqaul to p-value. So p-value is:

p-value = 0.3694

Correct option is d.

29:

Correct option is b.

30:

Correct option is c.

31:

Correct option is c.

32;

Correct option is a.

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