Students in the population of all students taking E270 were asked to state how much they spent on textbooks in the current semester. Jse the following textbook expense data (in dollars) to answer the...

Now consider the textbook expense of all IUPUI students.  The mean and variance of textbook expense of all IUPUI students are as follows:

? =	$518.66
?² =	15965.14

From the population of IUPUI students you take repeated samples of size
			? =	92

and compute the sample mean textbook expense.

10

The middle interval that captures 95% of the means from sample of size ? = 92 is,

a	492.84	544.48
b	488.54	548.78
c	484.23	553.09
d	479.93	557.39

Extracted text: Students in the population of all students taking E270 were asked to state how much they spent on textbooks in the current semester. Jse the following textbook expense data (in dollars) to answer the following 5 questions. 475 550 540 350 330 510 335 530 370 455 525 545 515 435 335 485 540 645 435 405 340 470 455 345 650 375 520 275 465 330 555 460 455 380 520 620 580 335 565 420 510 465 540 545 350 410 440 530 505 455 655 520 360 405 325 525 545 350 450 435 265 385 540 465 460 560 495 530 385 685 470 375 545 555 520 490 440 495 570 370 340 435 360 590 550 430 425 390 490 430 665 610 655 410 560 390 365 595 550 385 440 395 395 505 545 430 575 530 415 265 420 470 350 525 325 620 325 525 505 335 490 560 240 425 460 435 280 510 485 510 665 335 430 375 555 445 460 490 360 420 470 425 410 680 295 415 230 475 430 395 370 380 375 490 410 330 610 430 305 590 605 315 485 400 480 375 500 445 310 455 355 575 310 370 265 415 345 575 395 385 650 540 435 380 380 495 460 370 400 550 575 385 555 535 650 530 445 340 410 545 470 365 360 375 375 620 395 490 445 465 600 585 310 430 620 420 405 435 365 555 510 530 445 435 610 385 540 415 535 515 440 530 570 295 Arandom sample selected from the above population yielded the following data: 430 440 545 605 310 345 395 440