Question: For Exercise 5, find the 90% prediction interval for time when the speed is 72 words per minute. A researcher desires to know whether the

For Exercise 5, find the 90% prediction interval for time when the speed is 72 words per minute.
A researcher desires to know whether the typing speed of a secretary (in words per minute) is related to the time (in hours) that it takes the secretary to learn to use a new word processing program. The data are shown.

If there is a significant relationship, predict the time it will take the average secretary who has a typing speed of 72 words per minute to learn the word processing program.

Speed 48 74 52 79 83 56 85 63 88 74 90 92 Timey 7 4 8 3.5 2 6 2.3 5 2.1 4.5 1.95

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