The following information is obtained for a sample of 25 observations taken from a population. SSxx =
Question:
SSxx = 274.600, se = .932, and ŷ = 280.56 – 3.77x
a. Make a 95% confidence interval for B.
b. Using a significance level of .01, test whether B is negative.
c. Testing at the 5% significance level, can you conclude that B is different from zero?
d. Test if B is different from – 5.20. Use α = .01.
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a b 377 s b s e SSxx 932 274600 0562 df n 2 25 2 23 The 95 confidence interval for is b ts ...View the full answer
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