11. The process used to grind certain silicon wafers to the proper thickness is acceptable only if s, the population standard deviation of the thickness of dice cut from the wafers, is at most 0.50 mil. Use a = 0.05 to test the null hypothesis s = 0.50 against the alternative s > 0.50, if the thickness of 15 dice cut from such wafers have a standard deviation of 0.64 mil. Use the 5 step method.

MATLAB: An Introduction with Applications
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11. The process used to grind certain silicon wafers to the proper thickness is acceptable only if s, the population standard deviation of the thickness of dice cut from the wafers, is at most 0.50 mil. Use a = 0.05 to test the null hypothesis s = 0.50 against the alternative s > 0.50, if the thickness of 15 dice cut from such wafers have a standard deviation of 0.64 mil. Use the 5 step method.

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