Chapter 14: Q14.111 (page 585)
Identify the statistic used to estimate the population linear correlation coefficient
'r' is the statistic used to estimate age population linear correlation.
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In this Exercise 14.5, we repeat the information from Exercise 14.14.
a. Decide, at the significance level, whether the data provide sufficient evidence to conclude that is useful for predicting :
b. Find a confidence interval for the slope of the population regression line.
Suppose that and are two variables of a population with a predictor variable and a response variable.
a. The distribution of all possible values of the response variable corresponding to a particular value of the predictor variable is called a distribution of the response variable.
b. State the four assumptions for regression inferences.
U.S. Presidents. The Information Please Almanac provides data on the ages at the inauguration and death of the presidents of the United States. We give those data on the WeissStats site for those residents who are not still living at the time of this writing.
In each of Exercises 14.64-14.69, apply Procedure 14.2 an page 567 to find and interpret a confidence interval, at the specified confidence level for the slope of the population regression line that relates rite response variable to the predicter variable.
Crown-Rump Length. Refer to Exercise 14.62;.
Corvette Prices. The Kelley Blue Book provides information on wholesale and retail prices of cars. Following are age and price data for randomly selected Corvettes between and years old.
Here, denotes age, in years, and denotes price, in hundreds of dollars.
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