Question

Player	First Round	Final Round
Golfer 1	70	72
Golfer 2	71	72
Golfer 3	70	75
Golfer 4	72	71
Golfer 5	70	69
Golfer 6	67	67
Golfer 7	71	67
Golfer 8	68	73
Golfer 9	67	73
Golfer 10	70	69

Player	First Round	Final Round
Golfer 11	72	72
Golfer 12	72	70
Golfer 13	70	73
Golfer 14	70	77
Golfer 15	68	70
Golfer 16	68	66
Golfer 17	71	70
Golfer 18	70	68
Golfer 19	69	68
Golfer 20	67	71

Suppose you would like to determine if the mean score for the first round of a golf tournament event is significantly different than the mean score for the fourth and final round. Does the pressure of playing in the final round cause scores to go up? Or does the increased player concentration cause scores to come down?

(a) Use α = 0.10 to test for a statistically significantly difference between the population means for first- and fourth-round scores. State the null and alternative hypotheses. (Use μ_d = mean score first round − mean score fourth round.

Calculate the value of the test statistic. (Round your answer to three decimal places.)

Calculate the p-value. (Round your answer to four decimal places.)

p-value =  

(b) What is the point estimate of the difference between the two population means? (Use mean score first round − mean score fourth round.)

Answer 1

a)

value of the test statistic =-1.445

p value =0.1648

b)

point estimate of the difference between the two population means = -1