I am unsure how to solve this problem and what formula

asked Sep 1, 2023 178k views

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SOLUTION:

The z-score is gotten as;

$Z=(x-\mu)/((\sigma)/(√(n)))$

Inserting, the values we have;

Thus, using a significance level of 0.05;

Thus, the answer is OPTION C

Santi answered Sep 5, 2023

by Santi

4.9k points

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