Question

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Evaluate the formula z =
X-μ
0
√n
when μ = 123, n = 26, x= 127, and o=7.
Z= (Round to three decimal places as needed.)

Answer 1

Z = 2.91

Explanation:

Mean: 123

Sample Size: 26

Standard Deviation: 7

x = 127

z = (x - μ) / (σ /
`√(n)` )

`z=(127-123)/((7)/(√(26) ) ) \\z= 2.91`

**If this is a z-table question, then P (x = 127) = P (z = 2.91) = 0.9982.**