Mathematics, 31.12.2020 19:20, sanociahnoel
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 distance hit by the legendary champion, Byron Nelson. Ten randomly selected balls of two different brands are tested and the overall distance measured. 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.
Required:
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
Mathematics, 21.06.2019 22:00, Morehollie9428
Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.
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Mathematics, 22.06.2019 00:00, christeinberg1
An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.
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