Regression analysis and hypothesis testing

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Reference no: EM1396852

The lapping process, which is used to grind certain silicon wafers to the proper thickness, is acceptable only if 'sigma', the population standard deviation of the thickness of dice cut from the wafers, is at most 0.50 mil. Use the 0.05 level of significance to test the null hypothesis 'sigma' = 0.50 against the alternative hypothesis 'sigma' > 0.50, if the thickness of 15 dice cut from such wafer have a standard deviation of 0.64 mil.

a) What is the equation of the regression line for the pairs (X,Y) shown below? Assume Y on X regression line.

b) What Y is predicted when X=72?

X Y

70 127

66 112

75 146

71 131

67 116

62 97

Reference no: EM1396852

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