(Group 1) to 2018 (Group 2). He gathers all the data from the General Social Survey, and lists the following summary statistics from the sampling. The General Social Survey uses a method similar to simple random sample.
(Source: General Social Survey)
Choose the best answer that explains conditions necessary for a two sample t test.
Sampling is taken from the GSS, an extremely reliable source. That is all we need to know.
We can assume random sampling.
We can assume this is a volunteer sample.
Groups are dependent on each other, making them perfect for two mean significance tests.
0 / 1 pts
The University of Florida is interested in determining if there is a difference in the average weight gain between male students (group 2) and female students (group 1) during their freshman year. They take a random sample of 10 male students and 10 female students: the data is shown in the table below. Find the confidence interval with 95% confidence.
(Male – Female)
Female(group 1)Male(group 2)15752081539614512416101181358
a) (2.06, 9.14)
b) (-10.076, -1.124)
c) (-2.06, 9.14)
d) (-10.076, 1.124)
Statistics and Probability