The following information is obtained for a sample of 25 observations taken from a population. SSxx = 283.500, se = 0.974, and y = 283.26 - 3.82x a. Make a 95% confidence interval for B. Round your answers to two decimal places. The 95% confidence interval for Bis( i b. Using a significance level of 0.01, test whether Bis negative. B negative. c. Testing at the 5 % significance level. Can you conclude that Bis different from zero? B different from zero.

MATLAB: An Introduction with Applications
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The following information is obtained for a sample of 25 observations taken from a population.
SSxx = 283.500, se = 0.974, and y = 283.26 - 3.82x
a. Make a 95% confidence interval for B.
Round your answers to two decimal places.
The 95% confidence interval for Bis( i
b. Using a significance level of 0.01, test whether Bis negative.
B
negative.
c. Testing at the 5 % significance level. Can you conclude that Bis different from zero?
B
different from zero.
d. Test if Bis different from -4.50. Use a = 0.01.
B
different from -4.50.
Transcribed Image Text:The following information is obtained for a sample of 25 observations taken from a population. SSxx = 283.500, se = 0.974, and y = 283.26 - 3.82x a. Make a 95% confidence interval for B. Round your answers to two decimal places. The 95% confidence interval for Bis( i b. Using a significance level of 0.01, test whether Bis negative. B negative. c. Testing at the 5 % significance level. Can you conclude that Bis different from zero? B different from zero. d. Test if Bis different from -4.50. Use a = 0.01. B different from -4.50.
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