Mathematics, 23.03.2020 04:44 waltzcampbell
A university president believes that over the past few years, the mean age of students attending his university has decreased. To test this hypothesis, a study is conducted in which the age of 150 students who have been randomly sampled from the student body is measured. The mean age is 21.5 years. A complete census taken at the university a few years prior to the study showed a mean age of 23.5 years, with a standard deviation of 8.5. Test using a 1% level of significance.
What is the null hypothesis?
Answers: 3
Mathematics, 22.06.2019 01:00, yselahernandez02
Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.
Answers: 1
Mathematics, 22.06.2019 03:00, ultimateknight8
There are a total sales of 2,000 dollars on monday on tuesday sales dropped 10% on wednesday sales dropped another 20% compared with tuesday from wednesday to thursday sales increases by an equal amount to 25% of monday total sales what is the net change in dollars on total sales from monday to tuesday
Answers: 1
A university president believes that over the past few years, the mean age of students attending his...
History, 26.09.2019 06:20
History, 26.09.2019 06:20
Social Studies, 26.09.2019 06:20