Question

If you want t be 95% confident of estimating the population mean to within sampling error...

If you want t be 95% confident of estimating the population mean to within sampling error of +/- 6 and the standard deviation is assumed to be 19, what sample size is required?

Homework Answers

Answer #1

SOLUTION :

From given data,

sampling error =E =   6

standard deviation = = 19

95%

= 95/100 = 0.95

The area under the curve is

1- = 1-0.95 = 0.05

Using this area we find out Z value =1.960

Sample size = N = [(z*) / E ] 2

= [(1.960 * 19 ) / 6] 2

= (6.2067)2

= 38.523

   39

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
If you want to be 95​% confident of estimating the population mean to within a sampling...
If you want to be 95​% confident of estimating the population mean to within a sampling error of plus or minus 6 and the standard deviation is assumed to be 20​, what sample size is​ required? The sample size required is __ ​(Round up to the nearest​ integer.)  
If you want to be 95​% confident of estimating the population mean to within a sampling...
If you want to be 95​% confident of estimating the population mean to within a sampling error of plus or minus ± 35 and the standard deviation is assumed to be 175​, what sample size is​ required?
If you want to be 95% confident when estimating the population mean to within a sampling...
If you want to be 95% confident when estimating the population mean to within a sampling error of ± 20 and the standard deviation is assumed to be 100, what sample size is required?
If you want to be 95% confident that estimating the population mean is within a sampling...
If you want to be 95% confident that estimating the population mean is within a sampling error of + -200 and the standard deviation is assumed to be 1000, what is the sample size required? Round up the answer to the nearest integer.
If you want to be 99​% confident of estimating the population mean to within a sampling...
If you want to be 99​% confident of estimating the population mean to within a sampling error of plus or minus 6 and the standard deviation is assumed to be 20​, what sample size is​ required?
if you want to be 99% confident of estimating the population mean to within a sampling...
if you want to be 99% confident of estimating the population mean to within a sampling error of + or - 4 and the standard deviation is assumed to be 13, what sample size is required?
If you want to be 99?% confident of estimating the population mean to within a sampling...
If you want to be 99?% confident of estimating the population mean to within a sampling error of plus or minus 35 and the standard deviation is assumed to be 140?, what sample size is? required?
If you want to be 95%confident of estimating the population proportion to within a sampling error...
If you want to be 95%confident of estimating the population proportion to within a sampling error plus or minus ± 0.05 and there is historical evidence that the population proportion is approximately    0.38 what sample size is​ needed?
If you want to be 95?% confident of estimating the population proportion to within a sampling...
If you want to be 95?% confident of estimating the population proportion to within a sampling error of plus or minus0.05 and there is historical evidence that the population proportion is approximately 0.38?, what sample size is? needed?
If you want to be 99% confident of estimating the population proportion to within a sampling...
If you want to be 99% confident of estimating the population proportion to within a sampling error of ±0.06, what sample size is​ needed?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT
Active Questions
  • Code a simple Editor class with 2 constructors (one default, one with a string for a...
    asked 11 minutes ago
  • Using a greedy algorithm solve the following instance of Interval Scheduling {(2,12),(1,7),(3,5),(8,10),(7,14),(9,16),(10,14),(12,13),(17,22),(13,14),(15,20),(14,18),(20,30),(22,25),(26,27),(25,29),(24,31)}
    asked 16 minutes ago
  • * Write a Java program that calculates and displays the Fibonacci numbers * First prompt the...
    asked 36 minutes ago
  • Brownie Company sponsors a defined benefit pension plan for its employees. On January1, 2020, the following...
    asked 44 minutes ago
  • A new muscle relaxant is available. Researchers from the firm developing the relaxant have done studies...
    asked 1 hour ago
  • consider the information about the economy of Pakistan note that the currency of Pakistan is the...
    asked 1 hour ago
  • You arrive at your car and find that your meter has expired and you have gotten...
    asked 1 hour ago
  • 6.) please answer and explain thoroughly. Arrange the following atoms in order of increasing size: a.)...
    asked 2 hours ago
  • A solid wood door 1.00 m wide and 2.00 m high is hinged along one side...
    asked 2 hours ago
  • Problem 8-31 Comprehensive problem-calculate missing amounts, dividends, total shares, and per share information LO 1, 2,...
    asked 3 hours ago
  • Provide a narrative that compares market capitalization, book value, future earnings methods, and other methods mentioned)...
    asked 3 hours ago
  • A 6 cm tall object is placed 17 cm away from a concave mirror. The radius...
    asked 4 hours ago