please solve asap

Unoccupied seats on flights cause airlines to lose revenue. Suppose a large airline wants to estimate its average number of unoccupied seats per flight over the past year. Two hundred and twenty-five flight records are randomly selected, and the number of unoccupied seats is noted, with a sample mean of 11.6 seats and a standard deviation of 4.1 seats. How many flights should we select if we wish to estimate u to within 2 seats and be 95 percent confident? O A) 130 B) 65 O C) 33 D) 17 E) 12 The coffee and soup machine at the local subway station is supposed to fill cups with 6 ounces of soup. Ten cups of soup are bought with results of a mean of 5.93 ounces and a standard deviation of .13 ounces. Construct a 99 percent confidence interval for the true machine- fill amount. OA) [5.75,5.99] B) [5.85, 6.05] OC) [5.90, 6.00] OD) [5.70, 6.16] OE) E) [5.80, 6.06]