i need help with these 4 questions so please help it would be greatly appreciated!!!!!!!

Questions 1-4 are based on the following; The textbook expense of 96 students in 3 statistics class is shown below. Treat the data as 730 310 520 580 700 410 300 550 730 660 260 570 720 350 360 300 550 660 740 330 450 330 720 380 370 330 570 370 270 250 260 500 550 420 440 520 750 740 750 390 500 490 560 380 280 390 280 420 550 280 520 450 550 700 660 660 500 370 270 550 560 410 470 290 720 420 550 510 650 470 510 530 400 490 360 730 620 370 320 320 390 490 390 630 570 350 460 440 610 520 740 630 530 650 730 270 A random sample of 5 students is selected. The sample data is shown below. x 550 280 290 470 570 1 The sample mean is, 432 436 440 444 2 The sample variance is, 15536 16361 17186 19420 3 How many samples of size n = 5 can we select from this population? 120 5,4615 12 24,040,016 61,124,064- 4 in repeated sampling, what is the expected value of the sample mean? $491.1 5 $471.50 $452.64 $432.00 QuD'FJ DuD'ln DuD'ln Dun?!\