Description
10 questions about Statistics Math.
Please complete as soon as possible.
Unformatted Attachment Preview
Purchase answer to see full attachment
Explanation & Answer
See attached
1.Young men in certain countries tend to think they need more muscle to be attractive.
One study presented 200 young men from a certain country with 100 images of men with
various levels of muscle. Researchers measure level of muscle in kilograms per square
meter (kg/m2) of fat-free body mass. Typical young men have about 20 kg/m2. Each
subject chose two images, one that represented his own level of body muscle and one
that he thought represented "what women prefer." The mean gap between self-image
and "what women prefer" was 2.72 kg/m2. Suppose that the muscle gap in the
population of all young men has a Normal distribution with standard deviation 2.5 kg/m2.
If young men thought that their own level of muscle was about what women prefer, the
mean "muscle gap" in the study described above would be 0. We suspect (before seeing
the data) that young men think women prefer more muscle than they themselves have.
(a) State null and alternative hy...