An experiment was carried out by geologists to see how the time necessary to drill a distance
Question:
American Statistician [1991]: 4€“ 9).
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a. What proportion of observed variation in time can be explained by the simple linear regression model?
b. Does the simple linear regression model appear to be useful?
c. Minitab reported that sa1b12002 5 .347. Calculate a
95% confidence interval for the mean time when depth 5 200 feet.
d. A single observation on time is to be made when drilling starts at a depth of 200 feet. Use a 95% prediction interval to predict the resulting value of time.
e. Minitab gave (8.147, 10.065) as a 95% confidence interval for mean time when depth = 300. Calculate a 99% confidence interval for this mean.
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a The required proportion is r 2 0630 b Yes The P value of 0000 indicates that the data provide conv...View the full answer
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Related Book For 
Statistics The Exploration & Analysis Of Data
ISBN: 9780840058010
7th Edition
Authors: Roxy Peck, Jay L. Devore
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