Use the Following to Answer Questions

question 8

Short Answer

Use the following to answer questions :
For a data set of 8 values of x and y,the value of = 180,the standard deviation of errors for the regression of y on x is 9.237,and the value of b is -6.28.
For the purpose of running a hypothesis test,the null hypothesis is that the slope of the population regression line of y on x is zero and the alternative hypothesis is that the slope of this population regression line is less than zero.The significance level is 1%.
-The 99% confidence interval for the slope,B,of the population regression line is:

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