Question
The relationship between "strength" and "fineness" of cotton fibers was the subject of a study that...
The relationship between "strength" and "fineness" of cotton fibers was the subject of a study that produced the following data. (Give your answers correct to two decimal places.)
| x, Strength | 76 | 78 | 75 | 88 | 70 | 87 | 84 | 80 | 70 | 77 |
| y, Fineness | 4.2 | 4.7 | 3.7 | 4.5 | 3.7 | 4.7 | 4.1 | 4.4 | 4.5 | 3.8 |
(a) Draw a scatter diagram. (Do this on paper. Your instructor
may ask you to turn in this work.)
(b) Find the 98% confidence interval for the mean measurement of
fineness for fibers with a strength of 78.
| Lower Limit | |
| Upper Limit |
(c) Find the 95% prediction interval for an individual measurement
of fineness for fibers with a strength of 78.
| Lower Limit | |
| Upper Limit |
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