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Example (continued) Notice that $1.50/V50 is about .212. This is the standard deviation for i Then $7.25 is about .257.212=1.

i know the final answer, but i need an explanation with steps how we get .11 in the end by using the standard normal distribution (z-table)
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Solution - In this Example We have x be Random Variable and av Normal (7, 1:50) and n = 50 Then 1.50 0.212 is the standard 15

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