Question

30 randomly selected college students were asked whether they prefer to watch football or basketball. 8 students said they prefer to watch basketball, while the remaining 22 said they prefer to watch football. Go to www.lock5stat.com/StatKey/Links to an external site., but click 'CI for Single Proportion' instead of ‘CI for Single Mean, Median, St.Dev.’ Click on the button near the top of the page that says ‘Edit Data.’ Enter the count and sample size giving in this problem. Then, click Ok. Generate a bootstrap distribution with 10,000 samples for the proportion of college students who prefer to watch basketball. [Click ‘Generate 1000 Samples’ ten times (there might be some delay between each click).] What is the mean of the bootstrap distribution? What is the standard deviation of the bootstrap distribution? Construct a 95% confidence interval for the true proportion of college students who prefer to watch basketball instead of football. Interpret the confidence interval in context.

Answer #1

1. Follow the link www.lock5stat.com/StatKey (Links appended is not working i guess)

2. Click on CI for Single Proportion'

3. Click on ‘Edit Data.’ on top left

4. Enter count =8 and Sample =30. We are interested in basketball preferring count (8) out of our total sample which is 30

5. Enhance the number of samples using bootstrapping i.e. Click ‘Generate 1000 Samples’ ten times. This will generate a histogram chart with 10000 samples.

6. The chart (assuming normal distribution) also shows Mean=.266

7. Standard Deviation of the bootstrapped sample = Standard Error of the graph.= .081 (shown just below Mean

8. 2-tailed 95% Confidence Interval will be Mean +/- 1.96SD which means .266 - 1.96*.081 to .266+1.96*.081

from .107 to .425 is the desired 95% confidence interval which means that we can say with 95% certainty that the basketball watching people will be between 10.7% to 42.5%

140 students at a college were asked whether they had completed
their required English 101 course, and 91 students said "yes".
Construct the 99% confidence interval for the proportion of
students at the college who have completed their required English
101 course.
Enter your answers as decimals (not percents) accurate to three
decimal places.
The Confidence Interval is ( , )

140 students at a college were asked whether they had completed
their required English 101 course, and 91 students said "yes".
Construct the 99% confidence interval for the proportion of
students at the college who have completed their required English
101 course.
Enter your answers as decimals (not percents) accurate to three
decimal places.
The Confidence Interval is ( , )

138 students at a college were asked whether they had completed
their required English 101 course, and 109 students said "yes".
Construct the 90% confidence interval for the proportion of
students at the college who have completed their required English
101 course.
Enter your answers as decimals (not percents) accurate to three
decimal places.
The Confidence Interval is ( , )

When 500 college students were surveyed, 30% said that they own
their car. Construct a 98% confidence interval for the proportion
of college students who say they own their cars. Please show work
each step of the process.

When 500 college students were surveyed, 30% said that they own
their car. Construct a 95% confidence interval for the proportion
of college students who say they own their cars. DON'T JUST GIVE
THE ANSWER - SHOW WORK AND EXPLAIN YOUR PROCESS EACH STEP OF THE
WAY SO THAT I CAN FOLLOW WHAT YOU DID AND CHECK YOUR WORK.

A sample of 1000 college students at NC State University were
randomly selected for a survey. Among the survey participants, 102
students suggested that classes begin at 8 AM instead of 8:30 AM.
The sample proportion is 0.102.
What is the upper endpoint for the 99% confidence interval? Give
your answer to three decimal places.
(Note that due to the randomization of the questions, the
numbers in this question might be different from the previous
question.)
ANSWER: _________

Please answer the following Case
analysis questions
1-How is New Balance performing compared to its primary rivals?
How will the acquisition of Reebok by Adidas impact the structure
of the athletic shoe industry? Is this likely to be favorable or
unfavorable for New Balance?
2- What issues does New Balance management need to address?
3-What recommendations would you make to New Balance Management?
What does New Balance need to do to continue to be successful?
Should management continue to invest...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 11 minutes ago

asked 14 minutes ago

asked 15 minutes ago

asked 16 minutes ago

asked 16 minutes ago

asked 19 minutes ago

asked 25 minutes ago

asked 31 minutes ago

asked 39 minutes ago

asked 57 minutes ago

asked 1 hour ago

asked 1 hour ago