Question

(10pts) NBC reports that Americans watch a mean of 30 minutes oftelevision per evening. We conduct a research study in an attempt to provet hat the mean is greater. In a sample of 100 Americans, the sample mean nwas 33 minutes per evening with a standard deviation of 20 minutes.

(a) (2pts) Develop the null and alternative hypotheses:

(b) (2pts) Usingα= 0.04, what is the rejection rule?

(c) (2pts) Find the test statistic.(d) (2pts) ShouldH0be rejected?(e) (2pts)

Based on your answer in part (d), what is your conclusion asit applies to THIS SITUATION?

Answer #1

9. (10pts) NBC reports that Americans watch a mean of 30 minutes
of television per evening. We conduct a research study in an
attempt to prove that the mean is less. In a sample of 200
Americans, the sample mean was 24 minutes per evening with a
standard deviation of 15 minutes.
(a) (2pts) Develop the null and alternative hypotheses:
(b) (2pts) Using α = 0.02, what is the rejection rule?
(c) (2pts) Find the test statistic.
(d) (2pts) Should...

9. (10pts) NBC reports that Americans watch a mean of 30 minutes
of television per evening. We conduct a research study in an
attempt to prove that the mean is less. In a sample of 200
Americans, the sample mean was 24 minutes per evening with a
standard deviation of 15 minutes.
(a) (2pts) Develop the null and alternative hypotheses:
(b) (2pts) Using α = 0.02, what is the rejection rule?
(c) (2pts) Find the test statistic.
(d) (2pts) Should...

810. (10pts) The Department of Children and Families reports
that 30%of children have Attention Deficit Disorder (ADD). We
conduct a research study in an attempt to prove that it is less. In
a sample of 300 children, we found that 66 children have ADD.(a)
(2pts) Develop the null and alternative hypotheses:(b) (2pts)
Usingα= 0.03, what is the rejection rule?(c) (2pts) Find the test
statistic.(d) (2pts) ShouldH0be rejected?(e) (2pts) Based on your
answer in part (d), what is your conclusion as...

10. (10pts) The Department of Children and Families reports that
30% of children have Attention Deficit Disorder (ADD). We conduct a
research study in an attempt to prove that it is greater. In a
sample of 150 children, we found that 57 children have ADD.
(a) (2pts) Develop the null and alternative hypotheses:
(b) (2pts) Using α = 0.01, what is the rejection rule?
(c) (2pts) Find the test statistic.
(d) (2pts) Should H0 be rejected?
(e) (2pts) Based on...

In the New York Stock Exchange, officials claim that mutual
funds pay an average dividend of $200 per quarter. A financial
analyst conducts a research study to show that the average dividend
is actually greater. He collects data from a random sample of 90
mutual funds and obtains a sample mean dividend of $220 per quarter
with a standard deviation of $100.
Qa. Develop the null and alternative hypotheses.
Qb. Using ? = 0.02, what is the rejection rule?.
Qc....

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