Question

You HAPPEN TO KNOW THAT 20% OF ALL THE STUDENTS AT GENERIC UNIVERSITY HAVE BLUE EYES. YOU GATHER A RANDOM SAMPLE OF 50 STUDENTS. fFIND A VALUE SUCH THAT THERE IS A 95% PROBABILITY THAT THE SAMPLE PROPORTION WOULD BE GREATER THAN THAT VALUE. PLEASE SHOW WORK SO I CAN TRY AND UNDERSTAND THIS....

Answer #1

the dean of student life at Gonzaga University reported recently
that 0.75 of all Gonzaga students live on campus. Gus Spencer, a
psychology professor at Gonzaga, has selected a random sample of 75
students for a behavior study.a. Calculate the standard error of
the proportion. b. What is the probability the proportion of
students in Gus’s study who live on campus is no greater
than0.72?

The university would like to conduct a study to estimate
the true proportion of all university students who have student
loans. According to the study, in a random sample of 215 university
students, 86 have student loans.
(a) Construct a 95% confidence interval for estimating
the true proportion of all university students who have student
loans
(b) Provide an interpretation of the confidence interval
in part (a).
(c) Conduct an appropriate hypothesis
test, at the 5% level of significance to...

In the past, 60% of all undergraduate students enrolled at State
University earned their degrees within four years of matriculation.
A random sample of 95 students from the class that matriculated in
the fall of 2014 was recently selected to test whether there has
been a change in the proportion of students who graduate within
four years. Administrators found that 40 of these 95 students
graduated in the spring of 2018 (i.e., four academic years after
matriculation).
Given the sample...

You have been hired by the Coca-Cola Company to determine if
students at University prefer Coke or Pepsi. A taste test was
performed where students were given two identical cups and were
asked to taste both drinks. They had to report which drink they
prefer. It was found that 69 out of 125 students indicated they
preferred cup that contained Coke.
1. (4 pts) What is the random variable in this problem? Does the
random variable have a binomial distribution?...

The registrar claims that the mean IQ of students at Stetson
University (μ_0) is 120 with a standard deviation (σ) of 10. You
obtain a random sample of 25 students and find that their mean (X ̅
) is 115.State the null and alternative hypotheses. Conduct a z
test to evaluate the registrar’s claim. Let α=.05. Please show your
work and be sure to provide the z statistic, critical z value, and
p value. What decision do you make about...

You plan to take a random sample of 1000 undergraduate students
enrolled at the University of Washington to compare the proportion
of female and male students who would like to see that the United
States of America have a female President.
Suppose that you use random numbers to select
students, but you stop selecting females as soon as you have 100,
and you stop selecting males once you have 100. Is the resulting
sample a simple random sample? Explain your...

You want to know who CMC students will be voting for in the
upcoming election. You randomly select 50 students and record the
following:
27- Biden
20- Trump
3- Undecided or Other
--------------------------------------------------------------------------------------------------------------------------
a. Construct a 95% Confidence interval for the proportion of
students voting for Biden
b. Interpret the Interval.
Let's say you wanted your margin of error for the CMC voters
to be only 5%. How many students would you have to survey if (still
at 95% confidence):...

1. The reading speed of second grade students is approximately
normal with a mean of 90 words per minute (wpm) and a standard
deviation of 10 wpm. A. What is the probability a randomly selected
student will read more than 95 words per minute? B: What is the
probability that a random sample of 12 second grade students
results in a mean reading rate of more than 95 words per minute? c:
What is the probability that a random sample...

20% of all college students volunteer their time. Is the
percentage of college students who are volunteers different for
students receiving financial aid? Of the 363 randomly selected
students who receive financial aid, 58 of them volunteered their
time. 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 enter a decimal) H 1 : (Please enter a
decimal) The test...

The mean GPA at a certain large university is 2.80. A random
sample of 20 business students found a mean GPA of 2.95 with a
standard deviation of 0.31. Is there sufficient evidence to show
that the mean GPA for business students is greater than the mean
GPA for the university?
a) state the hypothesis
b) calculate the test statistic
c) find the p-value
d) make a statistical decision at a level of significance of
0.10
e) state your conclusion...

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