(See Steps) A researcher wishes to test the claim that the average age of lifeguards in Ocean City is less than 24 years. She selects a sample of 36 lifeguards
Question:
A researcher wishes to test the claim that the average age of lifeguards in Ocean City is less than 24 years. She selects a sample of 36 lifeguards and finds the mean of the sample to be 23.7 years, with a standard deviation of 2.0 years. Is there evidence to support the claim at
Ho: \(\mu \ge 24\) H1: \(\mu <24\)
The test value is z = - 2.10
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