Question 269117: Can someone please help with this question?
Determine the correct critical value(s) in each of the following situations. You may assume data sets are normally distributed.
A two-tailed test with alpha = 0.025. You may assume the value of alpha is known.
A left-tailed test with alpha = 0.10, unknown alpha, and a sample of size 35. You may assume the data is normally distributed.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Determine the correct critical value(s) in each of the following situations. You may assume data sets are normally distributed.
A two-tailed test with alpha = 0.025. You may assume the value of alpha is known.
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Each tail will have (1/2)alpha of the population.
(1/2)(0.025) = 0.0125
The corresponding z-score is invNorm(0.0125) = -2.2414
Since it is two-tail there are two critical values:
z = +2.2414 and z = -2.2414
I used a TI-84 calculator to find invNorm(0.0125)
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A left-tailed test with alpha = 0.10, unknown alpha, and a sample of size 35. You may assume the data is normally distributed.
invNorm(0.10) = -1.2674
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Cheers,
Stan H.
Determine the correct critical value(s) in each of the following situations. You may assume data sets are normally distributed.
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