Ernstfalld

2021-08-15

. a. 0.97

b. -0.97

c. 0.64

d. -0.64

Dora

Skilled2021-08-16Added 98 answers

Given:

x=60

$X\sim N(570,103)=N(\mu ,\sigma )$

$\mu =570$

$\sigma =103$

The z-score is the value x decreased by the mean mu and then divided by the standard deviation sigma.

$z=\frac{x-\mu}{\sigma}=\frac{470-570}{103}\approx -0.97$

Thus the correct answer is b.-0.97

x=60

The z-score is the value x decreased by the mean mu and then divided by the standard deviation sigma.

Thus the correct answer is b.-0.97

Read carefully and choose only one option

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