SOLUTION: A coworker claims the mean satisfaction rating of ABC employees is 3.2 (on a scale from 1 to 5, where 5 is extremely satisfied). You have reason to believe the mean satisfaction ra

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Question 1203190: A coworker claims the mean satisfaction rating of ABC employees is 3.2 (on a scale from 1 to 5, where 5 is extremely satisfied). You have reason to believe the mean satisfaction rating of ABC employees, μ, is different from this value and you plan to conduct a statistical test.
What is the null hypothesis, H0, that should be used for the test?
What is the alternative hypothesis, H1, that should be used for the test?

Answer by math_tutor2020(3816) About Me  (Show Source):
You can put this solution on YOUR website!

Null: mu+=+3.2 (claim)
Alternative: mu+%3C%3E+3.2

The "not equal" is because of the belief mu is different than 3.2
If this is the case, then either mu+%3C+3.2 or mu+%3E+3.2

The "not equal" sign in the alternative hypothesis tells us we have a two-tailed test.