Question

Suppose you have a normal distribution with known mu = 7 and sigma = 2. N(7,2)....

Suppose you have a normal distribution with known mu = 7 and sigma = 2. N(7,2). Compute the Z---score for:

a.X =8

b.X =2

c.X = 5

d.X =6

e.X =3

Math   Statistics-And-Probability   
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Answer #1

solution:

. N(7,2)

(a)

x=8 =7

=2

using z score formula

z=(x - ) /

=8-7/2

=0.5

'(b)

x=2

z=(x - ) /

=2- 7/2

=-2.5

(c)

x=5

z=(x - ) /

=5-7/2

z=-1

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