Ap stats

2. The military is testing the flight time of surveillance drones. A sample of 18 drones are tested and found to have an average flight time of 7.9_hours with a standard deviation of 0.8 hours. Construct a 98% confidence interval for the true average flight time of the drones. We are % confident that the true mean flight time is hours + hours 3. Would increasing the sample size decrease or increase the size of the confidence interval? 4. A confidence interval is found to be ( 872 , 903 a. What is the sample mean? b. What is the Margin of Error? 5. If a hypothesis test is performed and the p-value is found to be O. 2 2 a. Would you reject Ho at the 5% level of significance? b. Would you reject Hoat the 2 % level of significance