Question

How hard is it to reach a buisnessperson by phone? Let p be the proportion of...

How hard is it to reach a buisnessperson by phone? Let p be the proportion of calls to buisnesspeople for which the caller reaches the person being called on the first try.
(a) If you have no preliminary estimate for p, how mant buisness phone calls should you include in a random sample to be 80% sure that the point estimate p^ will be within a distance from 0.05 from p?

(b) A report states that buisnesspeople can be reached by a single phone call approximately 13% of the time. Using this (national) estimate for p, answer part (a).
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

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
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. How hard is it to reach a businessperson by phone? Let p be the proportion of calls to businesspeople for which the caller reaches the person being called on the first try. (a) If you have no preliminary estimate for p, how many business phone calls should you include in a random sample to be 80% sure that the...
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. How hard is it to reach a businessperson by phone? Let p be the proportion of calls to businesspeople for which the caller reaches the person being called on the first try. (a) If you have no preliminary estimate for p, how many business phone calls should you include in a random sample to be 80% sure that the...
A.) For this problem, carry at least four digits after the decimal in your calculations. Answers...
A.) For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. A random sample of medical files is used to estimate the proportion p of all people who have blood type B. (a) If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p? will be within a distance of...
A.) For this problem, carry at least four digits after the decimal in your calculations. Answers...
A.) For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. How hard is it to reach a businessperson by phone? Let p be the proportion of calls to businesspeople for which the caller reaches the person being called on the first try. (a) If you have no preliminary estimate for p, how many business phone calls should you include in a random sample to be 80% sure that...
What percentage of college students own cellular phones? Let p be the proportion of college students...
What percentage of college students own cellular phones? Let p be the proportion of college students who own cellular phones. (a) If no preliminary study is made to estimate p, how large a sample is needed to be 90% sure that a point estimate will be within a distance of 0.02 from p. 4. (a) __________________________ (b) A preliminary study shows that approximately 88% of college students own cellular phones. Answer part (a) using this estimate for p.
A random sample of medical files is used to estimate the proportion p of all people...
A random sample of medical files is used to estimate the proportion p of all people who have blood type B. a.) If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 90% sure that the point estimate p̂ will be within a distance of 0.058 from p? b.) Answer part (a) if you use the preliminary estimate that about 14 out of 90 people have blood...
The national council onsmall buisnesses is interested i the proportion of small buisnesses that declared Chapter...
The national council onsmall buisnesses is interested i the proportion of small buisnesses that declared Chapter 11 bankruptcy last year. Since there are so many small buisnesses, the national council intends to estimate the proportion from a random sample. Let p be the proportion of small buisjesses that declared chapter 11 bankruptcy last year. (a) If no preliminary sample is taken to estimate p, how large a sample is necessary to be 95% sure that a point estimate p^ will...
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. What percentage of your campus student body is female? Let p be the proportion of women students on your campus. (a) If no preliminary study is made to estimate p, how large a sample is needed to be 99% sure that a point estimate p̂ will be within a distance of 0.05 from p? (Round your answer up to...
15) For this problem, carry at least four digits after the decimal in your calculations. Answers...
15) For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. A random sample of medical files is used to estimate the proportion p of all people who have blood type B. (a) If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p̂ will be within a distance of...
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. What percentage of your campus student body is female? Let p be the proportion of women students on your campus. (a) If no preliminary study is made to estimate p, how large a sample is needed to be 99% sure that a point estimate p̂ will be within a distance of 0.03 from p? (Round your answer up to...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT