Does a statistics course improve a student's mathematics skills,as measured by a national test? Suppose a random sample of 13 students takes the same national mathematics exam prior to enrolling in a stats course and just after completing the course. At a 1% level of significance determine whether the scores after the stats course are significantly higher than the scores before. Take the differences = before - after. Before After 430 465 485 475 520 535 360 410 440 425 500 505 425 450 470 480 515 520 430 430 450 460 495 500 540 530 What type of alternative hypothesis is appropriate for this research question? O two-sided O one-sided

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Does a statistics course improve a student's mathematics skills,as measured by a national test? Suppose a random sample of 13 students takes the same national mathematics exam prior to enrolling in a stats course and just after completing the course. At a 1% level
of significance determine whether the scores after the stats course are significantly higher than the scores before. Take the differences = before - after.
Before
After
430
465
485
475
520
535
360
410
440
425
500
505
425
450
470
480
515
520
430
430
450
460
495
500
540
530
What type of alternative hypothesis is appropriate for this research question?
O two-sided
O one-sided
Transcribed Image Text:Does a statistics course improve a student's mathematics skills,as measured by a national test? Suppose a random sample of 13 students takes the same national mathematics exam prior to enrolling in a stats course and just after completing the course. At a 1% level of significance determine whether the scores after the stats course are significantly higher than the scores before. Take the differences = before - after. Before After 430 465 485 475 520 535 360 410 440 425 500 505 425 450 470 480 515 520 430 430 450 460 495 500 540 530 What type of alternative hypothesis is appropriate for this research question? O two-sided O one-sided
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