Daily DrivingThe average number of miles a person drives per day is24. A researcher wishes to see if people over age60drive less than24miles per day. She selects a random sample of25 drivers over the age of60and finds that the mean number of miles driven is23.4. The population standard deviation is4.1miles. At= 0.01, is there sufficient evidence that those drivers over60years old drive less than24miles per day on average? Assume that the variable is normally distributed. Use the critical value method with tables.

State the hypotheses and identify the claim with the correct hypothesis.:

H0:__________ claim or not claim

H1:___________claim or not claim

b. The hypothesis test is aone-tailed or two-tailed test.

Find the critical value(s). Round the answer to at least two decimal places. If there is more than one critical value, separate them with commas.

Critical value(s):

c)Compute the test value. Always roundzscore values to at least two decimal places.

Z=

d)Make the decision.

reject or do not reject the null hypothesis.

Summarize the results.

There is_____________________that drivers over60years old drive less than24miles per day, on average.

a. enough evidence to support the claim

b. not enough evidence to support the claim

c. enough evidence to reject the claim

d. not enough evidence to reject the claim