Question

Use the expression in the accompanying discussion of sample size to find the size of each...

Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the difference between proportions of men and women who own smartphones. Assume that you want 99​% confidence that your error is no more than 0.06.

The sample should include ___ men and ___ women.

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

Homework Answers

Answer #1

Refer Standard normal table/Z-table or use excel function "=NORM.S.INV((1-0.005))" to find the Z-value.

Round the value to the nearest whole number.

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
The sample size necessary to estimate the difference between two population proportions within an error margin...
The sample size necessary to estimate the difference between two population proportions within an error margin E for a confidence level of 1 - a can be derived from the following expression E = z ^ * sqrt rho iq 1 n 1 + p 2 q 2 n 2 replace n with n (assuming both samples are the same size) and replace each of, by 0.5 (since their values ​​are unknown). Then solve for n. n 2 p 1,...
(1 point) (a) Find the size of each of two samples (assume that they are of...
(1 point) (a) Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the proportions of boys and girls under 10 years old who are afraid of spiders. Assume the "worst case" scenario for the value of both sample proportions. We want a 99 99 % confidence level and for the error to be smaller than 0.02. 0.02. Answer: (b) Again find the sample size required, as in part...
(a) Find the size of each of two samples (assume that they are of equal size)...
(a) Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the proportions of boys and girls under 10 years old who are afraid of spiders. Assume the "worst case" scenario for the value of both sample proportions. We want a 9696% confidence level and for the error to be smaller than 0.1.0.1. Answer: (b) Again find the sample size required, as in part (a), but with the knowledge...
Find the size of each of two samples (assume that they are of equal size) needed...
Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the proportions of boys and girls under 10 years old who are afraid of spiders. Assume the "worst case" scenario for the value of both sample proportions. We want a 9595% confidence level and for the error to be smaller than 0.03.0.03. Answer: (b) Again find the sample size required, as in part (a), but with the knowledge that...
(a) Find the size of each of two samples (assume that they are of equal size)...
(a) Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the proportions of boys and girls under 10 years old who are afraid of spiders. Assume the "worst case" scenario for the value of both sample proportions. We want a 9999% confidence level and for the error to be smaller than 0.04.0.04. Answer: (b) Again find the sample size required, as in part (a), but with the knowledge...
(1 point) (a) Find the size of each of two samples (assume that they are of...
(1 point) (a) Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the proportions of boys and girls under 10 years old who are afraid of spiders. Assume the "worst case" scenario for the value of both sample proportions. We want a 96% confidence level and for the error to be smaller than 0.03. Answer:____ (b) Again find the sample size required, as in part (a), but with...
Marketers want to know about the differences between men's and women's use of the Internet. A...
Marketers want to know about the differences between men's and women's use of the Internet. A research poll in April 2009 from a random sample of adults found that 2358 of 3026 men use the Internet, while 2378 of 3169 women did. a). Find the proportions of men and women who said they use the Internet at least occasionally. b). What is the difference in proportions? c) What is the standard error of the​ difference? ​d) Find a​ 95% confidence...
Marketers want to know about the differences between​ men's and​ women's use of the Internet. A...
Marketers want to know about the differences between​ men's and​ women's use of the Internet. A research poll in April 2009 from a random sample of adults found that 2399 of 3038 men use the​ Internet, at least​ occasionally, while 2354 of 3185 women did. ​a) Find the proportions of men and women who said they use the Internet at least occasionally. ​b) What is the difference in​ proportions? ​c) What is the standard error of the​ difference? ​d) Find...
Marketers want to know about the differences between​ men's and​ women's use of the Internet. A...
Marketers want to know about the differences between​ men's and​ women's use of the Internet. A research poll in April 2009 from a random sample of adults found that 2375 of 3036 men use the​ Internet, at least​ occasionally, while 2352 of 3182 women did. ​a) Find the proportions of men and women who said they use the Internet at least occasionally. ​b) What is the difference in​ proportions? ​c) What is the standard error of the​ difference? ​d) Find...
Marketers want to know about the differences between​ men's and​ women's use of the Internet. A...
Marketers want to know about the differences between​ men's and​ women's use of the Internet. A research poll in April 2009 from a random sample of adults found that 2360 of 3040 men use the​ Internet, at least​ occasionally, while 2371 of 3182 women did. ​a) Find the proportions of men and women who said they use the Internet at least occasionally. ​b) What is the difference in​ proportions? ​c) What is the standard error of the​ difference? ​d) Find...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT