# Question: the relationship between quotstrengthquot and quotfinenessquot of cotton fibers was...

###### Question details

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 |
69 | 75 | 83 | 69 | 83 | 79 | 75 | 76 | 69 | 83 |

y, Fineness |
3.8 | 4.7 | 4.7 | 4.1 | 3.9 | 4.4 | 4.4 | 4.3 | 4.6 | 4.1 |

(a) Draw a scatter diagram. (Do this on paper. Your instructor
may ask you to turn in this work.)

(b) Find the 95% confidence interval for the mean measurement of
fineness for fibers with a strength of 80.

Lower Limit | |

Upper Limit |

(c) Find the 98% prediction interval for an individual measurement
of fineness for fibers with a strength of 80.

Lower Limit | |

Upper Limit |