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Running head: WEEK 3ASSIGNMENT1

Week 3Assignment BUS308: Statistics for Managers Professor Name Date

7.11


Running head: WEEK 3ASSIGNMENT2 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(lowe r)

P(uppe r)

z

X

mean

.9772

.0228

2.00

2 1

20

d.

s t d . d e v 0 . 5

= .1093

Mega Stat: normal distribution P(lowe r)

P(uppe r)

.1093

.8907

z 1.23

X

mean

19.385

20

st d. de v 0. 5

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Bus 308 week 3 assignments problems 7 11, 7 30, 8 8, 8 38