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WebAssign for Devore's Probability and Statistics for Engineering and the Sciences, 9th Edition [Instant Access], Single-Term
9th Edition
ISBN: 9780357893104
Author: Devore; Jay L.
Publisher: Cengage Learning US
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Chapter 12.3, Problem 38E
Refer to the data on x = liberation rate and y = NOx emission rate given in Exercise 19.
- a. Does the simple linear regression model specify a useful relationship between the two rates? Use the appropriate test procedure lo obtain information about the P-value, and then reach a conclusion at significance level .01.
- b. Compute a 95% CI for the expected change in emission rate associated with a 10 MBtu/hr-ft2 increase in liberation rate.
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270
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1. (30 pts) We wish to determine a regression equation that relates the length of an infant (in cm) to age (in days), gender and
weight at birth (in kg). Below is portion of the regression analysis derived using a software. *Note: under the gender
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Std. Err.
0.0980
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316.8866
age
weight
gender
intercept
0.4798
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1.3113
71.4734
8
1.0454
1.9591
19.53
7.7829
a. What is the sample size for this problem?
b. Write the estimated regression equation, interpret each slope coefficients, use the proper unit of measurement.
c. Test for significance of the Bage, Bweight, and Bgender at the 99% confidence level.
d. From (b) which parameter/s is/are statistically significant.
e. Test whether or not there is a significant relationship between the infant's length and the independent variables. Use a
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f. Provide the Coefficient…
Chapter 12 Solutions
WebAssign for Devore's Probability and Statistics for Engineering and the Sciences, 9th Edition [Instant Access], Single-Term
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