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The Practice of Statistics | 5th Edition | ISBN: 9781464108730 | Authors: Daren S. Starnes, Josh Tabor
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Prey attracts predators Refer to Exercise 6. (a) Give the standard error of the slope

Chapter 12, Problem 8

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QUESTION:

Prey attracts predators Refer to Exercise 6. (a) Give the standard error of the slope, SEb. Interpret this value in context. (b) Find the critical value for a 90% confidence interval for the slope of the true regression line. Then calculate the confidence interval. Show your work. (c) Interpret the interval from part (b) in context. (d) Explain the meaning of 90% confident in context.

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QUESTION:

Prey attracts predators Refer to Exercise 6. (a) Give the standard error of the slope, SEb. Interpret this value in context. (b) Find the critical value for a 90% confidence interval for the slope of the true regression line. Then calculate the confidence interval. Show your work. (c) Interpret the interval from part (b) in context. (d) Explain the meaning of 90% confident in context.

ANSWER:

Step 1 of 6

From Exercise 6,

Sample size,

The y-intercept estimate,

The slope estimate,

The estimate for standard deviation of the residuals,

Using the computer output from the least-squares regression analysis on the perch data we can determine the following:

 

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