Refer to the cell phone data file on the books website. Regress y = weight on x
Question:
Refer to the cell phone data file on the book’s website. Regress y = weight on x = capacity of battery, excluding the outlier (phone no. 70).
a. Stating the necessary assumptions, find a 95% confidence interval for the mean weight of cell phones with a battery capacity of 1500mAh. Interpret the interval.
b. Find a 95% prediction interval for the weight of a cell phone with a battery capacity of 1500mAh. Interpret.
c. Explain the difference between the purposes of the intervals in part a and part b.
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a The necessary assumptions are a linear relationship between the mean weight ...View the full answer
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Related Book For
Statistics The Art And Science Of Learning From Data
ISBN: 9780321997838
4th Edition
Authors: Alan Agresti, Christine A. Franklin, Bernhard Klingenberg
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