14. A statistician working for the Atlanta Police Department believes that the proportion of reported car accidents involving cell phone use in Atlanta differs from the national reported proportion of 26%. Suppose that, from a sample of 500 accident reports, she finds 120 cases of auto accidents that involved the use of cell phones. At the 0.01 level of significance, which of the following statements provides the best conclusion based on her test results? a. We have evidence the true percent of car accidents involving cell phone use is less than 26%. b. We have evidence the true percent of car accidents involving cell phone use is equal to 26%. c. We do not have sufficient evidence to conclude that the true percent of car accidents involving cell phone use differs from 26%. d. We have evidence the true percent of car accidents involving cell phone use is greater than 26%.

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14. A statistician working for the Atlanta Police Department believes that the proportion of
reported car accidents involving cell phone use in Atlanta differs from the national reported
proportion of 26%. Suppose that, from a sample of 500 accident reports, she finds 120 cases
of auto accidents that involved the use of cell phones. At the 0.01 level of significance, which
of the following statements provides the best conclusion based on her test results?
a. We have evidence the true percent of car accidents involving cell phone use is less than
26%.
b. We have evidence the true percent of car accidents involving cell phone use is equal to 26%.
c. We do not have sufficient evidence to conclude that the true percent of car accidents
involving cell phone use differs from 26%.
d. We have evidence the true percent of car accidents involving cell phone use is greater than
26%.
Transcribed Image Text:14. A statistician working for the Atlanta Police Department believes that the proportion of reported car accidents involving cell phone use in Atlanta differs from the national reported proportion of 26%. Suppose that, from a sample of 500 accident reports, she finds 120 cases of auto accidents that involved the use of cell phones. At the 0.01 level of significance, which of the following statements provides the best conclusion based on her test results? a. We have evidence the true percent of car accidents involving cell phone use is less than 26%. b. We have evidence the true percent of car accidents involving cell phone use is equal to 26%. c. We do not have sufficient evidence to conclude that the true percent of car accidents involving cell phone use differs from 26%. d. We have evidence the true percent of car accidents involving cell phone use is greater than 26%.
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