and teams. To inv The National Football League (NFL) records a variety of perfor

Question

and teams. To inv The National Football League (NFL) records a variety of performance data for individuals a random sample of 10 NFL teams for the 2011 season is collected for the average number of passing yard website, February 12, 2012) On conducting regression analysis in MS Excel, you generate the following output Lower 95% Upper 95% Stat 2.3 00 139.6 3.9 00 7.1 Coefficients P-value Intercept -70.4 Yds/Att 172 Standard Error 30.0 4.4 27.3 Question 7 of 7 Develop a 90% confidence interval for the slope of the estimated regression equation. O A 19.13, 25.27 B. [74,264] O c. 17.10, 27.30] O D (4.54, 29 83 Mark for ReviewmarsThis? Previous Next Save Exit Submit for Grading to searchh hp

Explanation / Answer

90% confidence interval is given by ( Mean+- Z * standard error) where = 1.645 for 90% interval

90% confidence interval should be narrower than 95% interval and the sum should equal 2* mean = 34.4

Hence, the correct answer is A.

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