A1 Business and Technical College Elementary Statistics Worksheet
QUESTION 11.1. State the research question
1.2. Who or what are the observational units?
1.3. What is the variable that is measured on each observational unit?
1.4. Describe the parameter in words.
1.5 a. State the Null Hypothesis
1.5 b. State the Alternative Hypothesis
1.6. How many cell phone users in the sample have talked on their phone while driving?
1.7. State the sample proportion
1.8. Is the sample proportion greater than 0.5?
1.9. If we assume that it is equally likely that a 16 to 17 year old talked or did not talk on the phone while
driving, what is the chance that a randomly selected 16-17 year old would have talked on the phone while
1.10. Is it possible that we could have obtained a sample statistic like ours if it is equally likely that any
given 16 to 17 year old driver has talked on the phone while driving?
1.Use the One Proportion Applet to simulate 1000 repetitions of this study. State what you would enter
into the following three blanks of the applet:
•Probability of Heads
•Number of Tosses
•Number of Repititions
1.12. Based on your simulated dotplot answer the following:
•What is the center of your simulated distribution?
•Does it makes sense that this is the center?
1.13. Based on your dotplot, what results look like typical sample proportions? what results look like
atypical sample proportions?
1.14. Does your sample proportion appear to be typical or atypical? Therefore does there appear to be
strong evidence against the null hypothesis?
1.15. state the p-value from your simulation
1.16. State how much evidence there is against the null hypothesis and state a conclusion about 16 to 17
year old cell phone users
1.17. You should have seen that 0.5 is a plausible value for the true proportion of 16 to 17 year old cell
phone users who have talked on the phone while driving. Does this prove that 0.5 is the exact proportion?
1.18. Use the One Proportion Applet to create a 95% confidence interval for the proportion of all 16 to
17 year olds who have talked on the phone while driving by using the plausible values method from section
3.1 (repeated hypothesis tests with different values of pi)
1.19. Create a simulated 2SD confidence interval for the parameter. Is this interval similar to the interval
found in the previous question?
1.20. Use the Theory Based Inference Applet to calculate a 95% confidence interval for the
parameter. Is this interval similar to the previous two intervals?
1.What would happen to your 95% confidence intervals if the sample size was 1000 instead of 242 and the
sample proportion was still 52%?
1.22. If you were to construct a 99% confidence interval using the plausible values method from question
18, how would the 99% confidence interval compare to the 95% confidence interval?
1.23. Do you think the results from this study can be extended to people in general? Explain your
1.24. Answer the following questions:
•What changes or improvements would you make if you were to repeat this study?
•What additional questions would you be interested in asking?
We've got everything to become your favourite writing service
Money back guarantee
Your money is safe. Even if we fail to satisfy your expectations, you can always request a refund and get your money back.
We don’t share your private information with anyone. What happens on our website stays on our website.
Our service is legit
We provide you with a sample paper on the topic you need, and this kind of academic assistance is perfectly legitimate.
Get a plagiarism-free paper
We check every paper with our plagiarism-detection software, so you get a unique paper written for your particular purposes.
We can help with urgent tasks
Need a paper tomorrow? We can write it even while you’re sleeping. Place an order now and get your paper in 8 hours.
Pay a fair price
Our prices depend on urgency. If you want a cheap essay, place your order in advance. Our prices start from $11 per page.