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Use the following to answer questions :
For a data set of 15 values of x and y,the value of 
= 313,the standard deviation of errors for the regression of y on x is 8.347,and the value of b is 1.78.
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 greater than zero.The significance level is 5%.
-The 90% confidence interval for the slope,B,of the population regression line is:
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