Question

Question 1: Do you prefer two-ply or one-ply? In a recent study of 200 people completed...

Question 1:

Do you prefer two-ply or one-ply? In a recent study of 200 people completed by Charmin Toilet Paper, they found that 68% of American households prefer two-ply.

a. Describe the shape, center, and spread of the sampling distribution.

b. What is the probability that the sample proportion will be within 2 percentage points of the population proportion?

c. You want to decrease the standard deviation by 1/2, what would your new sample size be?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

When we want to decrease standard deviation by  1/2, then we need to increase the sample size four times.

so new sample size =4*200 = 800

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
How do you know what functions to use on your calculator when looking at study problems?...
How do you know what functions to use on your calculator when looking at study problems? For example: A nationwide study indicated that 80% of college students with cell phones send and receive text messages with cell phones. A simple random sample of n = 200 college students with cell phones is obtained. (a) Describe the sampling distribution of ˆp, the sample proportion of college students with cell phones who send or receive text messages with their cell phones. [Hint:...
1. When constructing a confidence interval to estimate a population proportion, what affects the size of...
1. When constructing a confidence interval to estimate a population proportion, what affects the size of the margin of error? A. The sample size B. The sample proportion C. The confidence level D. All of the above affect the size of the margin of error E. None of the above affect the size of the margin of error 2. What percentage of couples meet through online dating apps? A survey of a random sample of couples finds that 12% say...
Question 1 (1 point) You own a small storefront retail business and are interested in determining...
Question 1 (1 point) You own a small storefront retail business and are interested in determining the average amount of money a typical customer spends per visit to your store. You take a random sample over the course of a month for 8 customers and find that the average dollar amount spent per transaction per customer is $106.745 with a standard deviation of $13.7164. Create a 95% confidence interval for the true average spent for all customers per transaction. Question...
In this second portion of the Final Exam, you will critically evaluate a quantitative research study...
In this second portion of the Final Exam, you will critically evaluate a quantitative research study on a social science topic. Your instructor will post an announcement with the reference for the article assigned for the exam. The study will be from a peer-reviewed journal and published within the last 10 years. In the body of your critique, describe the statistical approaches used, the variables included, the hypothesis(es) proposed, and the interpretation of the results. In your conclusion, suggest other...
In February 2012, the Pepsi Next product was launched into the US market. This case study...
In February 2012, the Pepsi Next product was launched into the US market. This case study provides students with an interesting insight into PepsiCo’s new product process and some of the challenging decisions that they faced along the way. Pepsi Next Case Study Introduction Pepsi Next was launched by PepsiCo into the US market in February 2012, and has since been rolled out to various international markets (for instance, it was launched in Australia in September 2012). The new product...
Please answer the following Case analysis questions 1-How is New Balance performing compared to its primary...
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
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT