Question

In 1960, census results indicated that the age at which men in a certain region first married had a mean of 23.4 years. It is widely suspected that young people today are waiting longer to get married. We want to find out if the mean age of first marriage has increased since then. Complete parts a through f below.

a.) Write appropriate hypotheses.

H0:

HA:

b.)

We plan to test our hypothesis by selecting a random sample of 40 men who married for the first time last year. Do you think the necessary assumptions for inference are satisfied? Explain. The independence condition ____ satisfied and the Nearly Normal Condition ____ satisfied because the sample size is large. Therefore, using the Student-t model for inference_____reliable.

c.)

Describe the approximate sampling distribution model for the mean age in such samples. Select the correct choice below and fill in the answer boxes to complete your choice.

D.)

The men in our sample married at an average age of 24.2 years, with a standard deviation of 5.4 years. That results in a t-statistic of 0.937 What is the P-value for this?

Answer #1

In 1960, census results indicated that the age at which American
men first married had a mean of 23.3 years. It is widely suspected
that young people today are waiting longer to get married. A random
sample of 40 men who married for the first time last year was
studied. The men in this sample married at an average age of 25.9
years, with a standard deviation of 5.3 years. A histogram of the
data is given to the right....

In 1980, census results indicated that the age at which American
men first married had a mean of 23.3 years. It is widely suspected
that young people today are waiting longer to get married. We want
to find out if the mean age of first marriage has increased during
the past 37 years. A random sample of 40 men who married for the
first time last year is selected, and the results found a mean of
24.2 years and a...

In? 1960, census results indicated that the age at which
American men first married had a mean of 23.3 years. It is widely
suspected that young people today are waiting longer to get
married. We want to find out if the mean age of first marriage has
increased since 1960. A random sample of??
4343
men who married for the first time last year was taken. The
average age of the men in the sample was
2424
years with a...

1)When a truckload of apples arrives at a packing plant, a
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discoloration, and other defects. The whole truckload will be
rejected if more than 10% of the sample is unsatisfactory. Suppose
that in fact 12% of the apples on the truck do not meet the desired
standard. What’s the probability that the shipment will be accepted
anyway? Give your answer to 4 decimal places.
2-1) In 1960, census results indicated...

In the United States, the mean age of men when they marry for
the first time follows the normal distribution with a mean of 24.8
years. The standard deviation of the distribution is 2.7 years. For
a random sample of 63 men, what is the likelihood that the age when
they were first married is less than 25 years? (Round your z value
to 2 decimal places. Round your answer to 4 decimal places.)

As you saw from the lab PowerPoint slides last week, you will be
doing a research study looking at ‘Aggression Priming” for your
first paper. For this week’s discussion, I want you to discuss with
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happen (do you expect something different than the hypothesis in
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Ralph Ellison
Perspective of Literature
Original Publication - American Law: The Third Century , Fred B.
Rothman & Co., 1976.
WHEN I was a young boy I often went out to the Oklahoma State
Capitol, where I assisted Mr. J. D. Randolph with his duties as
custodian of the State Law Library. I was about eleven years old at
the time, quite impressionable, and very curious about the
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These tests are intended for undergraduate students in
college or those under 18 years of age.
Read these directions carefully!
The below test includes 10 questions, randomly selected from a
large inventory. Most questions will be different each time you
take the test,
You must answer at least 9 out of 10 questions correctly to
receive your Certificate.
You have 40 minutes to complete each test, and you must answer
all 10 questions in order to to see your results....

Can you paraphrase the following rationale for me:
Male Reproductive System
1. Which of the following accurately describes
spermiogenesis?
a. Occurs before puberty
b. Involves stem cells, meiosis, and spermatogenesis
c. Involves cytodifferentiation of early spermatids
d. Occurs in diploid cells
e. Results in the formation of primary spermatocytes
Rationale:
Spermatogenesis, the first part of sperm production involves
mainly mitosis and meiosis and is followed by spermiogenesis, the
final differentiation process occurring in the haploid male germ
cells. Spermatogenesis begins...

2. SECURING THE WORKFORCE Diversity management in
X-tech, a Japanese organisation
This case is intended to be used as a basis for class discussion
rather than as an illustration of the effective or ineffective
handling of an administrative situation. The name of the company is
disguised.
INTRODUCTION
In light of demographic concerns, in 2012, the Japanese
government initiated an effort to change the work environment in
order to secure the workforce of the future. Japan is world
renowned for its...

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