Descriptive Statistics

Statistics
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Sep 10th, 2015

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a. Between 4 and 8

mean of 6

std deviation of 2

p(4<x>8)

p(4)

4-6/2

=-1

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Sep 10th, 2015

a, z score of -1 

find the z scores  0.5- 0.8413

=0.3413

b.2 and 10

P(2> X<10

2-6=-4/2

-4/2 and 4/2

-2 and 2  find the z scores  which will be the same but different sign

0.5-0.9772=

-0,.4772 and 0.4772

=-0.6544


C. P (0<X<12)

P=(0-6)/2

-3 AND 5

FIND THEIR Z SCORES 

0.03 and 0.05

z=0.5-0.5120=0.012

and 0.5-0.5199=-0.0199

find the difference 0.0079/100

=0.79



Sep 10th, 2015

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