Question 1
A population mean is to be estimated from the sample described. Round your answer to one decimal place if necessary. Assume that all confidence intervals use a 95% confidence level.
Sample size = 256, sample mean = 40, sample standard deviation = 13
What is the 95% confidence interval for the population mean?
◦ 38.4 < μ < 41.6
◦ 8 < μ < 18
◦ 39.2 < μ < 40.8
◦ 39.9 < μ < 40.1
Question 2
A population mean is to be estimated from the sample described. Round your answer to one decimal place if necessary. Assume that all confidence intervals use a 95% confidence level.
Sample size = 2500, sample mean = 223, sample standard deviation = 96
What is the 95% confidence interval for the population mean?
◦ 87.1 < μ < 104.9
◦ 222.9 < μ < 223.1
◦ 219.2 < μ < 226.8
◦ 221.1 < μ < 224.9
A sample flow sheet.
Initiation of a new round of replication before completion of the preceding round
Population size, 1970 - 2050
World Population, 1850–2150
Answer to Vector Question Pt. 1
Human Population Growth