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nani122
07.06.2020 •
Mathematics
The mean gross annual incomes of certified welders are normally distributed with the mean of $26,589 and a standard deviation of $2,659. The ship building association wishes to find out whether their welders earn more or less than $26,589 annually. The alternate hypothesis is that the mean is not $26,589. Which of the following is the alternate hypothesis? a. H1: <$26,589 b. H1: -$26,589 с. HI:T-826,589 d. Hi: -326,589
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Ответ:
And based on the claim the system of hypothesis are:
Null hypothesis:![\mu = 26589](/tpl/images/0679/1299/10302.png)
Alternative hypothesis:![\mu \neq 26589](/tpl/images/0679/1299/d0e88.png)
And the best alternative would be:
b.![H_1: \neq $26,589](/tpl/images/0679/1299/35fd3.png)
Step-by-step explanation:
For this case we want to test the hypotheis that the true mean is different from 26859. We have the following info given:
And based on the claim the system of hypothesis are:
Null hypothesis:![\mu = 26589](/tpl/images/0679/1299/10302.png)
Alternative hypothesis:![\mu \neq 26589](/tpl/images/0679/1299/d0e88.png)
And the best alternative would be:
b.![H_1: \neq $26,589](/tpl/images/0679/1299/35fd3.png)
Ответ:
S/15
Step-by-step explanation: