Mathematics, 30.07.2021 01:40 naomicervero

There is an old saying in golf: "You drive for show and you putt for dough." The point is that good putting is more important than long driving for shooting low scores and hence winning money. To see if this is the case, data on the top 69 money winners on the PGA tour in 1993 are examined. The average number of putts per hole for each player is used to predict the total winnings (in thousands of dollars) using the simple linear regression model (1993 winnings)i = Î²0 + Î²1(average number of putts per hole)i + Îµi,

where the deviations Îµi are assumed to be independent and Normally distributed with a mean of 0 and a standard deviation of Ïƒ. This model was fit to the data using the method of least squares. The following results were obtained from statistical software.

R2Â = 0.081
sÂ = 281.8
Variable Parameter estimate Standard error
Constant 7897.2 3023.8
Average putts â€“4139.2 1698.4

The quantity s = 281.8 is an estimate of the standard deviation Ïƒ of the deviations in the simple linear regression model.

a. What are the degrees of freedom for this estimate?
b. What is the value of the intercept of the least-squares regression line?
c. Suppose the researchers conducting this study wish to test the hypotheses H0:Î²1 = 0 versus Ha: Î²1< 0. What is the value of the t statistic for this test?
d. What is an approximate 95% confidence interval for the slope Î²1?

Answers: 2

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 12:30

An arrow is shot vertically upward at a rate of 180ft/s. use the projectile formula h=−16t2+v0t to determine at what time(s), in seconds, the arrow is at a height of 420ft. round your answer(s) to the nearest tenth of a second.

Answers: 1

Answer

Mathematics, 21.06.2019 14:30

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Answers: 1

Answer

Mathematics, 21.06.2019 17:40

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Answers: 1

Answer

Mathematics, 21.06.2019 20:00

Choose the linear inequality that describes the graph. the gray area represents the shaded region. a: y ≤ –4x – 2 b: y > –4x – 2 c: y ≥ –4x – 2 d: y < 4x – 2

Answers: 2

Answer

You know the right answer?

There is an old saying in golf: "You drive for show and you putt for dough." The point is that good...

Questions