Essay
An experiment was performed on a certain metal to determine if the strength is a function of heating time.Partial results based on a sample of 10 metal sheets are given below.The simple linear regression equation is 
= 1 + 1X.The time is in minutes,the strength is measured in pounds per square inch,MSE = 0.5, 
= 30,and 
= 104.Determine the 95 percent prediction interval for the strength of a metal sheet when the average heating time is 2.5 minutes.
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