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The maximum acceptable level of a certain toxic chemical in vegetables has been set at 0.8...

The maximum acceptable level of a certain toxic chemical in vegetables has been set at 0.8 parts per million​ (ppm). A consumer health group measured the level of the chemical in a random sample of tomatoes obtained from one producer to determine whether the mean level of the chemical in these tomatoes exceeds the recommended limit.

A. ​Two-tailed

B. ​Left-tailed

C. ​Right-tailed

math   Statistics-And-Probability   
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Answer #1

Answer:

For the given scenario, the claim is given as whether the mean level of the chemical in these tomatoes exceeds the recommended limit. So, the null and alternative hypotheses for this test are given as below:

Null hypothesis: H0: The mean level of the toxic chemical in tomatoes is 0.8 ppm.

Alternative hypothesis: Ha: The mean level of the toxic chemical in tomatoes is greater than 0.8 ppm.

H0: µ = 0.8 versus Ha: µ > 0.8

Alternative hypothesis consist of ‘>’ inequality.

So, this is Right-tailed test.

Answer: C. Right-tailed

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