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In testing the hypotheses:
H0 : ? = 950
H1 : ? 950,
the following information was given: ? = 1000, = 0.05, ? = 180 and n = 75.
It was found that ? = 0.2061.
a. Recalculate ? if n = 100.
b. What is the effect of increasing the sample size on the value of ??
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