Question: An experiment is conducted to determine how the strength y of plastic fiber depends on the size x of the droplets of a mixing polymer
An experiment is conducted to determine how the strength y of plastic fiber depends on the size x of the droplets of a mixing polymer in suspension. Data of (x, y) values, obtained from 15 runs of the experiment, have yielded the following summary statistics.
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(a) Obtain the equation of the least squares regression line.
(b) Test the null hypothesis H0 : β1 = -2 against the alternative H1: β1 (c) Estimate the expected fiber strength for droplet size x = 10 and set a 95% confidence interval.
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a The fitted line is then given by 7318 2214x Also b We test the hypotheses H 0 ... View full answer
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