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Chapter 7. Hypothesis Testing: Introduction to Hypothesis Testing (p-value Approach)
Two-tailed vs. One-tailed Testing
A left-tailed test should be used when the population parameter is suspected to be than a particular value. The hypotheses of a left-tailed #Z#-test for a population mean are:
A right-tailed test should be used when the population parameter is suspected to be than a particular value. The hypotheses of a right-tailed #Z#-test for a population mean are:
- #H_0:\mu##\mu_0#
- #H_a:\mu##\mu_0#
A right-tailed test should be used when the population parameter is suspected to be than a particular value. The hypotheses of a right-tailed #Z#-test for a population mean are:
- #H_0:\mu##\mu_0#
- #H_a:\mu##\mu_0#
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