Hypothesis Testing: Null vs. Alternative

I can formulate null and alternative hypotheses for a given research question.

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We don't generate video — this one is by Khan Academy on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.

1. 1

   The null hypothesis assumes things are happening as expected, often with a statement of equality, while the alternative hypothesis claims there is a difference or new news.

2. 2

   In the first example, the null hypothesis is that the mean amount of drink dispensed is 530 milliliters, and the alternative hypothesis is that it is greater than 530 milliliters.

3. 3

   In the second example, the null hypothesis is that students get at least eight hours of sleep, while the alternative hypothesis is that students get less than eight hours of sleep on average.

“A manufacturer claims that their new lightbulb lasts 1000 hours on average. You suspect the lightbulbs last for a different amount of time. State the null and alternative hypotheses to test this claim.”

Sample answer included in the free materials