How large the sample size should one use to estimate population mean within 0.02 at 99% confidence level? Assume population standard deviation is 1.20.
How large the sample size should one use to estimate population mean within 0.02 at 99%...
Please use excel for work. 20. We want to estimate the population mean within 5, with a 99% level of confidence. The population standard deviation is estimated to be 15. How large a sample is required?
How large a sample should be taken if the population mean is to be estimated with 99% confidence to within $67? The population has a standard deviation of $893. (Round your answer up to the next whole number.) You may need to use the appropriate table in Appendix B to answer this question.
QUESTION: MINIMUM SAMPLE SIZE FOR THE POPULATION MEAN, μ Use the Excel Calculator to solve the following problem: A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.1 inch. Determine the minimum sample size required to construct a 99% confidence interval for the population mean. Assume the population standard deviation is 0.25 inch. Explain how you used the Excel calculator.
The sample size needed to estimate a population mean to within 10 units was found to be 68. If the population standard deviation was 50, then the confidence level used was: Selected Answer: c. 0.9 Answers: a. 0.99 b. 0.95 c. 0.9 d. 0.85
The estimate of the population proportion is to be within plus or minus 0.02, with a 90% level of confidence. The best estimate of the population proportion is 0.18. How large a sample is required?
Please show your work........................... 16. The sample size needed to estimate a population mean to within 50 units was found to be 97. If the population standard deviation was 250, then the confidence level used was a. 90% b. 95% c. 9996 d. None of these choices.
A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.13 inch. (a) Determine the minimum sample size required to construct a 99%confidence interval for the population mean. Assume the population standard deviation is 0.6 inch. (b) The sample mean is 28.2 inches. With a sample size of 152, a 99% level of confidence, and a population standard deviation of 0.60 inch, does it seem possible that the population mean could be less than 28.3 inches?...
It is desired to estimate the mean GPA of each undergraduate class at a large university. How large a sample is necessary to estimate the GPA within 0.24 at the 99% confidence level? The population standard deviation is 1.3.
Use the given information to find the minimum sample size required to estimate an unknown population mean μ. How many business students must be randomly selected to estimate the mean monthly earnings of business students at one college? We want 95% confidence that the sample mean is within $131 of the population mean, and the population standard deviation is known to be $529.
Use the given information to find the minimum sample size required to estimate an unknown population mean mu. How many business students must be randomly selected to estimate the mean monthly earnings of business students at one college? We want 95% confidence that the sample mean is within $ 129 of the population mean, and the population standard deviation known to be $595.