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Sampling, Inference & the t-Test · Question 37 of 70

Question 37

EasyOriginal question

A company claims its batteries last 500 hours on average. A researcher tests whether the true mean is different. What is the null hypothesis?

Options for question 37

Show the answer and explanation
CorrectNot quiteAnswer B

Correct answer: B

Explanation

  1. The null hypothesis says there is no difference: the population mean is the claimed value.

  2. H0:μ=500H_0: \mu = 500.

Worth noting

μ≠500\mu \ne 500 is the alternate hypothesis, what the researcher suspects.

Concept
Writing the null hypothesis
Typical time
60 s
Your time
—
The rule this testsNull and alternate hypotheses
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Ten questions from Sampling, Inference & the t-Test, at your own pace.

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