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An exercise science major wants to try to use body weight to predict how much someone...

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Question

Statistics

An exercise science major wants to try to use body weight topredict how much someone can bench press. He collects the datashown below on 30 male students. Both quantities are measured inpounds.

Body WeightBench Press
147134
134131
141125
129135
152147
176142
196171
200158
132134
176153
204153
194156
211164
145129
180141
201162
124118
145151
172143
145137
137121
153143
191170
177160
150138
202157
144135
151153
202157
216169

a) What type of association does there appear to be betweenthese two variables?
Solved Answer: positive association

b) Compute a 95% confidence interval for the average bench pressof 150 pound males. What is the lower limit? Give your answer totwo decimal places.

c) Compute a 95% confidence interval for the average bench pressof 150 pound males. What is the upper limit? Give your answer totwo decimal places.

d) Compute a 95% prediction interval for the bench press of a150 pound male. What is the lower limit? Give your answer to twodecimal places.

e) Compute a 95% prediction interval for the bench press of a150 pound male. What is the upper limit? Give your answer to twodecimal places.

Please provide formulas used for the confidence intervals andprediction intervals and standard error. Thank you!

Answer & Explanation Solved by verified expert
4.0 Ratings (736 Votes)
Body Weight XBench Press    See Answer
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