Question
In: Statistics and Probability
Is it true that the majority of North campus students text while driving? In a survey...
- Is it true that the majority of North campus students text while driving? In a survey of 60 students at North Campus, 45 indicated that they often text while driving. Using a .05 significance level, test the claim that the proportion of students at North Campus who text while driving is greater than 50%. Show all steps in the hypothesis testing procedure. Clearly enumerate the null and alternative hypotheses. Show calculation of test statistic and p-vale. Give wording of the final conclusion using figure 8-7 on page 403 of your textbook. State final conclusion.
Solutions
orchestra answered 2 years agoRelated Solutions
Is it true that the majority of North campus students text while driving? In a survey...
Is it true that the majority of North campus students text
while driving? In a survey of 60 students at North Campus, 45
indicated that they often text while driving. Using a
.05 significance level, test the claim that the proportion of
students at North Campus who text while driving is greater than
50%. Show all steps in the hypothesis testing procedure. Clearly
enumerate the null and alternative hypotheses. Show calculation of
test statistic and p-vale. Give wording of the...
Is it true that the majority of North campus students text while driving? In a survey...
Is it true that the majority of North campus students text
while driving? In a survey of 60 students at North Campus, 45
indicated that they often text while driving. Using a
.05 significance level, test the claim that the proportion of
students at North Campus who text while driving is greater than
50%. Show all steps in the hypothesis testing procedure. Clearly
enumerate the null and alternative hypotheses. Show calculation of
test statistic and p-vale. Give wording of the...
20. In a survey of 735 students at Broward College, North Campus, results revealed that 283...
20. In a survey of 735 students at Broward College, North
Campus, results revealed that 283 students were foreign-born and
452 were native-born. Using these results, conduct a hypothesis
test to test the claim, at the .03 significance level, that the
proportion of students who are born outside of the USA is greater
than 35 percent. Be sure to show all the steps in the hypothesis
testing procedure including the null and alternative hypotheses,
the calculation of the test statistic,...
2. A survey of 200 students is selected randomly on a large university campus. They are...
2. A survey of 200 students is selected randomly on
a large university campus. They are asked if they use a laptop in
class to take notes. The result of the survey is that 128 of the
200 students responded ”yes."
A. Find 98% confidence interval
B. How would the confidence interval change if the
confidence level had been 90% instead of 98%?
C. How would the confidence interval change if the
sample size had been 300 instead of 200?...
A survey of 200 students is selected randomly on a large university campus They are asked...
A survey of 200 students is selected randomly on a large
university campus They are asked if they use a laptop in class to
take notes. The result of the survey is that 70 of the 200 students
use laptops to take notes in class.
What is the value of the sample proportion? (0.5
pts)
What is the standard error of the sampling proportion?
(0.5 pts)
Construct an approximate 95% confidence interval for the true
proportion by going 2 standard...
A survey of 150 students is selected randomly on a large university campus. They are asked...
A survey of 150 students is selected randomly on a large
university campus. They are asked if they use a laptop in class to
take notes. The result of the survey is that 60 of the 150 students
responded "yes." An approximate 98% confidence interval is
(0.307, 0.493). Complete parts a through d below. b) How would
the confidence interval change if the sample size had been 375
instead of 150? (Assume the same sample proportion.) The new
confidence interval...
A survey of 200 students is selected randomly on a large university campus. They are asked...
A survey of 200 students is selected randomly on a large
university campus. They are asked if they use a laptop in class to
take notes. Suppose that based on the survey, 80 of the 200
students responded "yes."
a) What is the value of the sample proportion ModifyingAbove p
with caret?
b) What is the standard error of the sample proportion?
c) Construct an approximate 95% confidence interval for the
true proportion p by taking plus or minus 2...
A survey of 250 students is selected randomly on a large university campus. They are asked...
A survey of 250 students is selected randomly on a large
university campus. They are asked if they use a laptop in class to
take notes. The result of the survey is that 115 of the 250
students responded "yes." An approximate 95% confidence interval
is (0.397,0.523). Which of the following are true? If they are
not true, briefly explain why not
a)95% of the students fall in the interval
(0.397,0.523).
b) The true proportion of students who use laptops...
1. A survey reflects the views of 1,000 undergraduate students on the new building on campus....
1. A survey reflects the views of 1,000 undergraduate students
on the new building on campus. The table below shows their points
(like, dislike or not care) and which year they are. (write out all
the probabilities in formal notion)
Like
Dislike
Not care
Total
Freshman
100
98
22
220
Sophomore
152
85
23
260
Junior
80
178
12
270
Senior
143
76
31
250
Total
475
437
88
1000
Form the proportions table.
Are disliking the building and being...
1. In a recent campus survey, 75 Indiana students were asked if they felt that their...
1. In a recent campus survey, 75 Indiana students were asked if
they felt that their education at Cleary was preparing them for
their future careers and 83% of students responded “Extremely well
prepared.” Construct a 95% confidence interval (use z= 1.96) for
the true proportion of Cleary students who feel the same way. Round
standard error to 4 decimal places.
2. Is there anything you could do to get a narrower
range of values in the previous problem?
3....
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