Question

1. A researcher wants to know if there is a difference in the proportion of men and women who often or sometimes feel free to report problems in the workplace.

Assume the p-value is 0.023. Interpret this p-value with an alpha level of 0.05.

Group of answer choices

a. With our given
p-value, **there is not enough** statistically
significant evidence that there is a difference in **sample
proportions** of men and women who feel free "often" or
"sometimes" to report workplace problems.

b. With our given
p-value, there **is enough** statistically significant
evidence that there is a difference in **population
proportions** of men and women who feel free "often" or
"sometimes" to report workplace problems.

c. With our given
p-value, there **is not enough** statistically
significant evidence that there is a difference in
p**opulation proportions** of men and women who feel
free "often" or "sometimes" to report workplace problems.

d. With our given
p-value, t**here is enough** statistically significant
evidence that there is a difference in **sample
proportions** of men and women who feel free "often" or
"sometimes" to report workplace problems.

2. In addition to year-round offerings, many breweries also produce special seasonal beers. One brewer at a local brewery was wondering if there was a relationship between someone's favorite type of beer, and their favorite season of the year. He decided to ask 100 people both what their favorite type of beer was (lager, stout, IPA, or red ale) and what their favorite season of the year was (spring, summer, fall, or winter).

What would be the degrees of freedom for this scenario?

Group of answer choices

a. 9

b. Not enough information

c. 16

d. 4

Answer #1

A researcher wants to prove that there is a difference in the
average life spans between men and women in Japan. Let mu1 =
average life span of Japanese women and mu2 = average life span of
Japanese men. A random sample of 10 women showed an average
lifespan of 83 years, with a sample standard deviation of 7 years.
A random sample of 10 men showed an average lifespan of 77 years,
with a sample standard deviation of 6.4...

A university investigation was conducted to determine whether
women and men complete medical school in significantly different
amounts of time, on the average. Two independent random samples
were selected and the following summary information concerning
times to completion of medical school computed. Perform the
appropriate test of hypothesis, at level 0.05 to determine whether
there is a significant difference in time to completion of medical
school between women and men.
Women
Men
Sample Size
90
100
Mean
8.4 years
8.5...

1.
I am interested in if there is a pay difference between men and
women nurses. Based on a study by ucsf male nurses used to make
more. I randomly sample and collect data. Assume you can
pool the variances. What is the p-value based on the following
sample...
Females Males
xbar 44,000 47,000
s 12,000 12,600
n 60 57
What is the p-value?
2.
I am interested in if there is a pay difference between men and
women nurses....

Since an instant replay system for tennis was introduced at a
major tournament, men challenged 1424 referee calls, with the
result that 424 of the calls were overturned. Women challenged 750
referee calls, and 221 of the calls were overturned. Use a 0.01
significance level to test the claim that men and women have equal
success in challenging calls. Complete parts (a) through (c)
below.
a. Test the claim using a hypothesis test.
Consider the first sample to be the...

A researcher wants to find if women or men are more likely to
enjoy roller coasters. She asked 40 women and 35 men the
following question, “Do you like roller coasters?” 31 of
the women responded, ‘yes’, and 21 of the men responded,
‘yes’. Can the researcher conclude at the .05 level of
significance that there is a difference in the proportion of women
who like roller coasters and the proportion of men that like roller
coasters? Show all 5 steps. (10 Points)
For Problem,...

Suppose that a random sample of 100 men between the ages of 25
and 54 was selected and it was found that 84 were currently
working. A similar sample of 100 women was selected and 70 were
working. Complete parts a and b below.
a. Using alphaequals 0.10?, can it be concluded that the proportion
of men in this age group who are working differs from the
proportion of women who are? working?
What is the test? statistic?
chi squaredequals...

In a survey, 500 men and 500 women were randomly selected. Among
the men, 52 had been ticketed for speeding within the last year,
whereas 27 of the women had been ticketed for speeding during the
same period (based on data from R. H. Bruskin Associates).
(a) At the 0.01 significance level, test the claim that women
have lower rate of speeding tickets.
Original claim is made by the Answer hypothesis.
Original claim is: pwomen - pmenAnswer
0.
Test statistic:...

Do men take a different amount of time than women to get out of
bed in the morning? The 42 men observed averaged 6.2 minutes to get
out of bed after the alarm rang. Their standard deviation was 2.7.
The 60 women observed averaged 5 minutes and their standard
deviation was 2.2 minutes. What can be concluded at the α = 0.10
level of significance? For this study, we should use The null and
alternative hypotheses would be: H 0...

****PLEASE ANSWER ALL QUESTIONS****
Question 12 (1 point)
A medical researcher wants to determine if the average hospital
stay of patients that undergo a certain procedure is greater than
8.7 days. The hypotheses for this scenario are as follows: Null
Hypothesis: μ ≤ 8.7, Alternative Hypothesis: μ > 8.7. If the
researcher takes a random sample of patients and calculates a
p-value of 0.0942 based on the data, what is the appropriate
conclusion? Conclude at the 5% level of significance....

1/ A physical therapist wants to determine the difference in the
proportion of men and women who participate in regular sustained
physical activity. What sample size should be obtained if she
wishes the estimate to be within five percentage points with 95%
confidence, assuming that
(a)she uses the estimates of 21.8% male and
18.3% female from a previous year? n = (Round up to the nearest
whole number.)
(b) she does not use any prior estimates?
2/ A survey asked,...

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