Mathematics, 13.12.2019 23:31 fmyear12
1) when would you carry out a t-test for independent means? how is this different from the situation in which you would carry out a t-test for dependent means?
2) for each of the following studies, say whether you would use a t-test for independent means or for dependent means.
an educational researcher randomly assigns a group of 47 fourth-grade students to receive a new after-school math program and 48 other fourth-grade students to receive the standard after-school math program, then measures how well they all do on a math test.
a. a marketing researcher measures 100 doctors’ reports of how many patients asked them about a particular drug the month before a major advertising campaign, and a month after the campaign.
b. a researcher tests the reaction time of a group of 14 individuals twice, once while in a very hot room and once while in a normal-temperature room.
c. a researcher measures the heights of 40 college students who are the firstborn in their families, then compares the 15 of them who come from a large family to the remaining 25 who come from smaller families.
d. a researcher tests performance on a math skills test among 250 individuals before and after they complete a one-day seminar on managing test anxiety.
e. a researcher compares the resting heart rate of 15 individuals who have been taking a particular drug to the resting heart rate of 48 individuals who have not been taking this drug.
Answers: 1
Mathematics, 21.06.2019 18:00, keidyhernandezm
List the sides of δrst in in ascending order (shortest to longest) if: a ∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°
Answers: 2
Mathematics, 21.06.2019 21:00, gabrielar80
The paint recipe also calls for 1/4 cup of food coloring. tyler says mrs. mcglashan will also need 6 cups of food coloring. do u agree or disagree? explain.
Answers: 2
1) when would you carry out a t-test for independent means? how is this different from the situatio...
Biology, 02.10.2019 02:30
Mathematics, 02.10.2019 02:30
Social Studies, 02.10.2019 02:30
History, 02.10.2019 02:30