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You are performing a left-tailed test. If α=.001α=.001, find the critical value, to three decimal places....

You are performing a left-tailed test.

If α=.001α=.001, find the critical value, to three decimal places.

zα = _____

please explain, if so please provide steps on ti83 as well. thank you.

Math   Statistics-And-Probability   
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Answer #1

One-tailed test alludes to the significance test in which the region of rejection appears on one end of the sampling distribution. It represents that the estimated test parameter is greater or less than the critical value. When the sample tested falls in the region of rejection, i.e. either left or right side, as the case may be, it leads to the acceptance of alternative hypothesis rather than the null hypothesis.

Left-tailed test: When the population parameter is believed to be lower than the assumed one, the hypothesis test carried out is the left-tailed test.

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