A researcher is curious about the effect of sleep on students' test performances. He chooses 60 students and gives each two tests: one given after two hours' sleep and one after eight hours' sleep. The test the researcher should use would be:A) T-test for the differences in two means assuming equal variances) T-Test for the differences in two means assuming unequal variances) Paired t-test) F test for the differences in variances) Any of the above

One integer is 8 times another. if the product is 72, then find the integers

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

What percent of the circle below is shaded?