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In: Statistics and Probability
Career Training According to the study The American Freshman: National Norms 2015, 76.1% of college freshmen...
Career Training According to the study The American Freshman: National Norms 2015, 76.1% of college freshmen said that “to get training for a specific career” was a very important reason for their going to college. Consider a group of seven freshman selected at random. In Exercises 23–26, find the probabilities that the number of people in the group who felt that the reason was very important is as stated. 23. All seven 24. Exactly three of the seven 25. At least six of the seven 26. No more than two of the seven
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Results of the American College Counseling Association indicate that 9% of college freshmen have seen a...
Results of the American College Counseling Association indicate
that 9% of college freshmen have seen a professional counselor, 14%
of college sophomores have seen a professional counselor, 16% of
college juniors have seen a professional counselor, and 21% of
college seniors have seen a professional counselor. The Syracuse
University Health Center conducts its own survey, and finds the
following: CHI SQ
Freshmen
Sophomores
Juniors
Seniors
# Seeing a Counselor
20
25
36
48
Is the distribution of students
seeking counselors...
Several years ago, a study of college freshmen found that 29.2% of incoming freshmen characterized their...
Several years ago, a study of college freshmen found that
29.2% of incoming freshmen characterized their political views as
liberal, 46.6% as moderate, and 24.2% as conservative. For this
year, a random sample of 500 incoming college freshmen yielded the
following frequency distribution for political views. Complete
parts (a) and (b) below.
Liberal 145
Moderate 235
Conservative 120
According to national data, about 15% of American college students earn a graduate degree. Using this...
According to national data, about 15% of American college
students earn a graduate degree. Using this estimate, what is the
probability that exactly 27 undergraduates in a random sample of
200 students will earn a college degree? Hint: Use the normal
approximation to the binomial distribution, where p = 0.15 and q =
0.85. (Round your answer to four decimal places.) Incorrect: Your
answer is incorrect.
According to national data, about 15% of American college students earn a graduate degree. Using this...
According to national data, about 15% of American college
students earn a graduate degree. Using this estimate, what is the
probability that exactly 25 undergraduates in a random sample of
200 students will earn a college degree? Hint: Use the
normal approximation to the binomial distribution, where
p = 0.15
and
q = 0.85.
The American Council of Education reported that 47% of college freshmen earn a degree and graduate...
The American Council of Education reported that 47% of college
freshmen earn a degree and graduate within 5 years.
Assume that
graduation records show women make up 50% of the students who
graduated within 5 years,
but only
45% of the students who did not graduate within 5 years.
The
students who had not graduated withing 5 years either dropped out
or were still working on their degrees.
Students earn a degree and graduate within 5 years
47%
Women student...
The CHE reported that 60% of those responding to a national survey of college freshmen were...
The CHE reported that 60% of those responding to a national
survey of college freshmen were attending the college of their
first choice. Suppose that 500 students responded to the survey the
actual sample size was much larger.
a) Using the sample size of 500, calculate a 98% confidence
interval for the proportion of college students who were attending
their first choice of college.
b) The actual sample size of survey was much larger than 500.
Would a confidence interval...
According to the National Association of Colleges and Employers, the 2015 mean starting salary for new college graduates in health sciences was $51,541.
According to the National Association of Colleges and Employers, the 2015 mean starting salary for new college graduates in health sciences was $51,541. The mean 2015 starting salary for new college graduates in business was $53,901. † Assume that starting salaries are normally distributed and that the standard deviation for starting salaries for new college graduates in health sciences is $11,000. Assume that the standard deviation for starting salaries for new college graduates in business is $17,000.
(a)
What...
1. According to well-developed national norms, the mean of scores on the OB Anxiety scale among...
1. According to well-developed national norms, the mean of
scores on the OB Anxiety scale among American adults equals 50 and
the standard deviation of scores on this inventory equals 15. A
researcher wants to assess whether adults living in Canada differ
in anxiety from American adults. She has no a priori hypothesis
about whether Canadians have higher or lower values (i.e., the key
thing of interest at this stage is whether the Canadians simply
differ from Americans) She administers...
The student academic group on a college campus claims that freshman students study at least 2.5...
The student academic group on a college campus claims that
freshman students study at least 2.5 hours per day, on average. One
Introduction to Statistics class was skeptical. The class took a
random sample of 30 freshman students and found a mean study time
of 137 minutes with a standard deviation of 45 minutes. At α = 0.01
level, is the student academic group’s claim correct? Calculate the
p-value.
According to the National Institutes of Health (2015) in 2012, it was reported that about 45...
According to the National Institutes of Health (2015) in 2012,
it was reported that about 45 million American adults (nearly 20%
of adult population) were diagnosed with a mental illness with the
overall rate possibly being higher due to individuals not being
diagnosed. Choose a specific mental illness and briefly describe
the condition, prevalence, cause, common treatments and possible
consequences. The bigger picture- how is the healthcare system and
society doing regarding diagnosis, treatment, and acceptance of
mental illness of...
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