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Your null hypothesis (H0) embodies the claim made about the population parameter.
Scenario: The Delta Apple Pi chapter at Crammer Nation University claims that their brothers get on average 25 Tinder matches per day. You have a hunch that their daily Tinder matches are actually lower than that, so you collect a random sample of 35 Delta Apple Pi brothers' daily Tinder matches. You measure a mean of 23.5 daily matches with a standard deviation of 5.7 matches. Provide support for your claim using a hypothesis test with an alpha level of 0.05.
H0: µ = 25
PRO TIP #1: We're hypothesizing about the true population mean (µ) here, not the sample mean (x-bar)!
PRO TIP #2: We're testing on the population mean (µ) since our scenario is working with an average (a.k.a. "mean") value, not proportion (p).
The null hypothesis will always have an equal sign.
We're making a claim that the population parameter equals something.
