x.Hmorder=\"0\"> If you use the sample size equation and get a result of n=11.30

Question

x.Hmorder="0"> If you use the sample size equation and get a result of n=11.3095, how many people should you sample? a) 11.3095 b) 12 c) 24 d) 23 e) 2.95 5. Find the sample size: We desire to be within plus or minus 2 units. We will have a 90% confidence interval and the population standard deviation is 6. What is the estimated sample size? a) the estimated sample size lies between 0 and 10 b) the estimated sample size lies between 11 and 20 c) the estimated sample size lies between 21 and 30 d) the estimated sample size lies between 31 and 40 e) the estimated sample size lies between 41 and 60 6. Let's say we know the population standard deviation and we are asked to create a 90% confidence interval. Which value most accurately represents the critical value of Z that you would use to plug in for your interval? a) 1.28 b) 1.65 c) 1.96 d) 3.95 e) 2.08 7. Find the sample size: We desire to be within plus or minus 4 units. We will have a 95% confidence interval and the population standard deviation is 15. What is the estimated sample size? a) the estimated sample size lies between 0 and 10 b) the estimated sample size lies between 11 and 20 c) the estimated sample size lies between 21 and 30 d) the estimated sample size lies between 31 and 40 e) the estimated sample size lies between 41 and 60 8. If we had a study that involved 200 observations and we made a 95% confidence interval, how many observations would we expect to have outside of the range of our interval? a) 95 b) 190 c) 5 d) 10 e) 0 9. Find the sample size: We desire to be within plus or minus 5 units. We will have a 95% confidence interval and the population standard deviation is 10. What is the estimated sample size? Find the sample size: We desire to be within plus or minus 2 units. We will have a 90% confidence interval and the population standard deviation is 6. What is the estimated sample size? a) the estimated sample size lies between 0 and 10 b) the estimated sample size lies between 11 and 20 c) the estimated sample size lies between 21 and 30 d) the estimated sample size lies between 31 and 40 e) the estimated sample size lies between 41 and 60

Explanation / Answer

x.Xorder="0"> If you use the sample size equation and get a result of n=11.3095, how many people should you sample? a) 11.3095 b) 12 c) 24 d) 23 e) 2.95 5. Given E=2, =6, =0.1, Z(0.05)=1.645 (check normal table) The sample size is n=(Z*/E)^2 = (1.645*6/2)^2 = 24.35 Find the sample size: We desire to be within plus or minus 2 units. We will have a 90% confidence interval and the population standard deviation is 6. What is the estimated sample size? a) the estimated sample size lies between 0 and 10 b) the estimated sample size lies between 11 and 20 c) the estimated sample size lies between 21 and 30 d) the estimated sample size lies between 31 and 40 e) the estimated sample size lies between 41 and 60 6. Given =0.1, Z(0.05)=1.645 (check normal table) Let's say we know the population standard deviation and we are asked to create a 90% confidence interval. Which value most accurately represents the critical value of Z that you would use to plug in for your interval? a) 1.28 b) 1.65 c) 1.96 d) 3.95 e) 2.08 7. Given E=4, =15 =0.05, Z(0.025)=1.96 (check normal table) The sample size is n=(Z*/E)^2= (1.96*15/4)^2 =54.02 Find the sample size: We desire to be within plus or minus 4 units. We will have a 95% confidence interval and the population standard deviation is 15. What is the estimated sample size? a) the estimated sample size lies between 0 and 10 b) the estimated sample size lies between 11 and 20 c) the estimated sample size lies between 21 and 30 d) the estimated sample size lies between 31 and 40 e) the estimated sample size lies between 41 and 60 8. 200*0.05=10 If we had a study that involved 200 observations and we made a 95% confidence interval, how many observations would we expect to have outside of the range of our interval? a) 95 b) 190 c) 5

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