Question: Write the correct answer in the blanks below and include your output with this page when you turn it in. Problem 1 A traffic safety
Write the correct answer in the blanks below and include your output with this page when you turn it in.
Problem 1
A traffic safety officer conducted an experiment to determine whether there is a correlation between people's ages and driving speeds. Six individuals were randomly sampled and the following data were collected. Compute a pearson r and then construct a least squares regression equation using age to predict driving speed.
Age
20
25
45
46
60
65
Speed (mph)
60
47
55
38
45
35
Compute a pearson r and then construct a least squares regression equation using Age to predict driving speeds.
Compute a scatter plot (simple scatter) and paste the output below
What is Peason r = -.70
What is the least squares regression equation for using age to predict driving speeds.
What percent of the variance in driving speed can we account for by knowledge of age? = 48.77%
What is the slope of the regression line?= -0.370
What number reflects the error in prediction ?
What is the 95%confidence interval for the regression slope?
What number reflects the error in prediction7.6864
When testing the null hypothesis for the regression coefficient that H0: b=0, what is the t ration used?
What does the slope in the regression line above mean.
From the output of the analysis report the number that indicates the SS that are not explained by age.
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