subject
Mathematics, 10.04.2020 16:30 Shamasen1

A random sample is selected from a normal population with a mean of μ = 40 and a standard deviation of σ = 6. After a treatment is administered to the individuals in the sample, the sample mean is found to be M = 37.

a. If the sample consists of n = 36 scores, is the sample mean sufficient to conclude that the treatment has a significant effect? Use a two-tailed test with α = .05.
b. If the sample consists of n = 9 scores, is the sample mean sufficient to conclude that the treatment has a significant effect? Use a two-tailed test with α = .05?

ansver
Answers: 3

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 16:50, joshsd8479
Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.
Answers: 2
image
Mathematics, 21.06.2019 22:00, kingalex7575
The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?
Answers: 1
image
Mathematics, 21.06.2019 23:30, yaretxi
If you measured the width of a window in inches and then in feet with measurement would you have the greater number of units
Answers: 3
image
Mathematics, 22.06.2019 00:30, Daddysgirl2019
How do i simply this radical expression?
Answers: 1
You know the right answer?
A random sample is selected from a normal population with a mean of μ = 40 and a standard deviation...

Questions in other subjects: