а) у? + бу— 40

At the beginning of the semester, you have the following scores on your first two tests: 96 and 88. (a) What is your current test average? (Round your answer to 2 decimal places.)(b) For the next test, your performance slips and you get a 65. What is your new test average, incorporating all three tests? (Round your answer to 2 decimal places.

Fire departments in your county have an average benchmark of 6 minutes on a fire call from the time the 911 operator takes the call to the time the first firefighter arrives on the scene. This 6-minute average includes a 1-minute call handling time from when 911 gets the call to when they notify the fire department. There is a 1-minute time from when the firefighters are notified to when they get out of the fire station. Then they have 4 minutes from when they leave the station to when they arrive on scene. Two fire departments in your county are being compared. From one fire department, a random sample of 10 calls has a mean of 6.51 minutes total with a standard deviation of 0.26 minutes. From the other fire department, a random sample of 11 calls shows a mean of 6.42 minutes with a standard deviation of 0.19. Construct a 90% confidence interval for the difference in the mean call time between the two fire departments. Fire departments in your county have an average benchmark of 6…

the average household income of Georgia is 89,679.25 and median household income for Georgia is 59,235 Is the median always lower than average? If not, please elaborate and provide an example that indicates opposite results.

It's not for a grade. Now answer them all please.