Mathematics, 15.04.2020 04:29 tomoetoes6910

The overall distance traveled by a golf ball is tested by hitting the ball with Iron Byron, a mechanical golfer with a swing that is said to emulate the legendary champion, Byron Nelson. Ten randomly selected balls of two brands are tested and the overall distance measured. Assume that the variances are equal. The data follow:

Brand 1: 275, 286, 287, 271, 283, 271, 279, 275, 263, 267
Brand 2: 258, 244, 260, 265, 273, 281, 271, 270, 263, 268.

a. Is there evidence that overall distance is approximately normally distributed? Is an assumption of equal variances justified?
b. Test the hypothesis that both brands of ball have equal mean overall distance. Use α = 0.05. What is the P-value?
c. Construct a 95% two-sided CI on the mean difference in overall distance for the two brands of golf balls.
d. What is the power of the statistical test in part (b) to detect a true difference in mean overall distance of 5 yards?
e. What sample size would be required to detect a true difference in mean overall distance of 3 yards with power of approximately 0.75?

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 15:00, koolgurl2003

In the pendulum formula t=2pi. read the problem on the picture ! ; $; $; ! ; ! ; ! ; )$; ! ; ! ; ! ; $; $; $! ; ! ; ); $; $$

Answers: 1

continue

Mathematics, 21.06.2019 17:30, kleshead

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x

Answers: 3

continue

Mathematics, 21.06.2019 17:40, Arealbot

Find the value of ax 4 ; a = 2, x = 1. select one: a. 2 b. 4 c. 1 d. 8

Answers: 2

continue

Mathematics, 21.06.2019 20:20, oofoofoof1

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done

Answers: 2

continue

You know the right answer?

The overall distance traveled by a golf ball is tested by hitting the ball with Iron Byron, a mechan...