The drop down choices for population parameter include: the difference in the sample sizes, the difference in the two sample means, the mean time spent for all test-takers before & after tutoring, or the mean time spent for all test takers from before & after tutoring combined.

> MAT 240. Applied Statistics home > iesis tests for the difference between two population means E \"BOOKS catalog \"WP An online math tutor service would like to claim that the average time spent taking a standardized test after students go through tutoring is fess than the average time spent before going through tutoring. A simple random sample of students takes a pretest, then goes through tutoring and takes a posttest. Resutts of the sample are shown below. MM What are the population parameters? m:"*m 5 m ' suns-s.\" f a Pick , g m- I . , 7 o w] . i 3933'" 1; Is the two~sample hypothesis test a paired ttest or an unpaired tatest? iii;::.f. i Z W: . * ,9\";me - m What is the level of signicance? Ex: 0.12 W i may: In a What is the null hypothesis H9? What is the alternative hypothesis H\"? _ ' Should Ho be rejected or does Hg fail to beirejeetedz' PiGl'sl: 2 '. 1 L1 ' ' ' ' ' What conclusion can be drawn from the data? . ' vevidence exists to support the claim that the mean time spent ta king a test after tutoring is less than the mean time spent taking a test before tutorin i - r i i i ' - i r ' .I'Ji V H ' miniama M. M, i. A u .l