Statistics Lectures - 20: One Sample z-Test & One Sample t-Test
A series of free Statistics Lectures with lessons, examples & solutions in videos.
This is page twenty of the series of free video lessons, “Statistics Lectures”. These lectures discuss various types of samples t-test, covering one sample z-test and one sample t-test.
Related Pages
18: Hypothesis Testing 1
19: Effect Size, Power, Statistical vs. Practical Significance
21: Various Types Of Samples t-Test
22: More Samples t-Test
Jump to Table of Contents
Statistics - Lecture 59: One Sample z-Test
- Define Null and Alternative Hypothesis
- State Alpha
- State Decision Rule
- Calculate Test Statistic
- State Results
- State Conclusion
Statistics - Lecture 60: One Sample z-Test For Proportions
Example:
A survey claims that 9 out of 10 doctors recommend aspirin for their patients with headaches. To test this claim,
a random sample of 100 doctors is obtained. Of these 100 doctors, 82 indicate that they recommend aspirin. Is this
claim correct? Use alpha = 0.05
Statistics - Lecture 61: One Sample t-Test
z-Tests are commonly done when the population standard deviation is known. t-Tests are commonly done when the population standard deviation is unknown. We use the t-distribution because the unknown population standard deviation is now a value we must estimate.
Statistics Lecture Series - Table Of Contents
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