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Flashcard BUS 308 Week 3 Assignments 7.11, 7.30, 8.8 and 8.38

Week 3 Assignment


BUS308: Statistics for Managers


7.11


a.


The sample mean is normally distributed. No, we do not have to make any assumptions about the shape of the population because the sample size is larger (> 30).


b.u2 = 20, 4 = 4/642 - 4/8 = .5


c.= .0228


Mega Stat:


normal distribution


P(lower)


P(upper)


z


X


mean


std.dev


.9772


.0228


2.00


21


20


0.5

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