A student at a local high school claimed that three- quarters of 17-year-old students in her high school had
their driver's licenses. To test this claim, a friend of hers
sent an email survey to 45 of the 17-year-olds in her
school, and 34 of those students had their driver's
license. The computer output shows the significance test
and a 95% confidence interval based on the survey data.
Test and Cl for One Proportion
Test of p = 0.75 vs p +0.75
Sample X N Sample p 95% CI Z-Value P-Value
1
34 45 0.755556 (0.6300, 0.086 0.9315
0.8811)
Based on the computer output, is there convincing
evidence that p, the true proportion of 17-year olds at this
high school with driver's licenses, is not 0.75?
O No, the P-value of 0.9315 is very large.
Yes, the P-value of 0.9315 is very large.
O Yes, the 95% confidence interval contains 0.75.
No, the incorrect significance test was performed.
The alternative hypothesis should be p > 0.75.
No, the incorrect significance test was performed.
The alternative hypothesis should be p<0.75.