### 1 video in "Z Test"

## Z Test for the Mean

Z Test for the Mean

5144 views, 3 ratings - 00:09:33

Created by and copyright of Larry Perez. Funded by the state of California through Saddleback College. More information on videos, resources, and lessons at Algebra2Go.

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Using the Z test in Statistics.

- What is the Z test?
- How do you identify the claim and define the hypothesis?
- What is a left-tailed hypothesis test?
- What is an alternate hypothesis?
- What is a null hypothesis?
- What are critical values for a normal distribution for statistics?
- What is an acceptance and rejection region?
- What is a sample standard deviation and how do you find it?
- What is a Z-score and how do you find it?
- How do you decide whether to accept the null hypothesis or reject it?

This video does a great job of stepping through a college statistics problem, defining the hypothesis and claim, and using the Z test for a normal distribution to test the claim. A really helpful video for brushing up on this vital statistics topic.