The following information is obtained for a sample of 100 observations taken from a population. SSxx =
Question:
SSxx = 524.884 se = 1.464, and ŷ = 5.48 + 2.50x
a. Make a 98% confidence interval for B.
b. Test at the 2.5% significance level whether B is positive.
c. Can you conclude that B is different from zero? Use α = .01.
d. Using a significance level of .01, test whether B is greater than 1.75.
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a b 250 s b s e SS xx 1464 524884 0639 Since n 100 is very large we use the normal distribution to a...View the full answer
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