verage number of miles a person drives per day is 24. A researcher wishes to see if people over age 60 drive less tha 24 miles per day. She selects a random sample of 25 drivers over the age of 60 and finds that the mean number of miles driven is 23.4 . The population standard deviation is 4.1 miles. At α=0.01, is there sufficient evidence that those drivers over 6-60 years old drive less than 24 miles per day on average? Assume that the variable is normally distributed. Use the
The average number of miles a person drives per day is 24. A researcher wishes to see if people over age 60 drive less tha 24 miles per day. She selects a random sample of 25 drivers over the age of 60 and finds that the mean number of miles driven is 23.4 . The population standard deviation is 4.1 miles. At α=0.01, is there sufficient evidence that those drivers over 6-60 years old drive less than 24 miles per day on average? Assume that the variable is
State the hypotheses and identify the claim.
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:H0 :
claim or not claim
:H1:
claim or not claim
The hypothesis test is a ▼(Choose one) one tailed or two tails
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As we know the population standard devoation, we will use the z test.
The null and alternative hypotheses are:
Ho:
H1:
This corresponds to a left-tailed test or one-tailed test.
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