Question

37. Find the aren under the standard n (a) 0.0606 ormal curve between of .--155 and .-032 (b) 0.5649 ()0.4351 (d) 0.6255 t would be the value of the linear correlation coeficient if applied to the folowing data? (a) r = +0.00 (b) r +1.00 (c)+0.50 (d)1.00 39. A sales manager believes that the mean number of days per year her company's sales representatives spend traveling is less than 50. Select the hypothesis test decision below that would define a TypeI Error. (a) Reject μ-50 when the mean had actually decreased. (b) Reject 50 when the mean had not decreased. (c) Fail to reject μ-50 when the mean had actually decreased. (d) Fail to reject μ 50 when the mean had not decreased. ege 40. The average price for a gallon of milk is shown to be highly correlated with the price of a dozen Which of the following statements is true? (a) An increase in the price of milk is the cause of an increase in the price of eggs. (b) An increase in the price of milk is potentially the cause of an increase in the price of eggs. (c) An increase in the price of milk is not the cause of an increase in the price of eggs. (d) I don't care, I'm over this test

Answer 1

37. (b) 0.5649

38. (a) 0.00

39. (b) Reject $μ=50$ when the mean had not decreased.

40. (b) An increase in the price of milk is potentially the cause of an increase in the price of eggs.