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In: Statistics and Probability

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 75 78 74 69 80 82 80 86 70 88
y, Fineness 3.8 4 4.5 3.7 4.3 3.8 3.8 4.7 4.8 3.7



(a) Find the 98% confidence interval for the mean measurement of fineness for fibers with a strength of 76.

Upper Limit -

Lower Limit-


(b) Find the 99% prediction interval for an individual measurement of fineness for fibers with a strength of 76.

Upper Limit -

Lower Limit-

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