Answer Happy

Please answer all three questions
Golf-course designers have become concerned that old courses are becoming obsolete since new technology has given golfers the ability to hit the ball so far. Designers, therefore, have proposed that new golf courses need to be built expecting that the average golfer can hit the ball more than 230 yards on average. A random sample of 177 golfers show that their mean driving distance is 230.7 yards, with a standard deviation of 41.8. 28. Find the value of the standardized test statistic. (a) .7 (b) .223 (c) .125 (d) -.7 (e) -.125 29. Find the P-value for the above mentioned test. (a) .0871 (b) .5871 (c) .0228 (d) .9772 (e) .4129 The following is used for question 30. The equation of the best fit line relating the amount of bill (in dollars) a to the amount of tip (in dollars) y is ŷ = .18x - 2.70 30. Predict the amount of tip if the amount of bill is $ 70. (a) The predicted amount of tip is $12.60 (b) The predicted amount of tip is $ 10.50 (c) The predicted amount of tip is $ 9.90 (d) The predicted amount of tip is $14