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kodGreya [7K]
3 years ago
7

How to solve this problem

Mathematics
1 answer:
Sindrei [870]3 years ago
8 0

Answer:

x= 1, -1, (1/2)

Step-by-step explanation:

1. set the function equal to zero and then solve for x

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What am I supposed to be solving for?
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The mean annual income of certified welders is normally distributed with a mean of $50,000 and a population standard deviation o
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Using the p-value method, the decision rule is:

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<h3>What is the relation between the p-value and the test hypothesis?</h3>

Depends on if the p-value is less or more than the significance level:

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In this problem, we have a two-tailed test, as we are testing if the mean is different of a value. For a significance level of 0.1, the critical value of z(when a p-value of 0.1 is obtained) is of |z| = 1.645, hence the decision rule is:

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More can be learned about p-values at brainly.com/question/13873630

#SPJ1

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