Which term best describes the following statement?
you are looking at a map of the united states, and it is
assumed that you already know which direction is north.
oa. theorem
ob. conjecture
o c. common notion
o d. proof

Arandom sample of 45 observations results in a sample mean of 68. the population standard deviation is known to be 23 a. compute the margin of error at a 959% confidence interval. b. compute the 95% confidence interval for the population mean c. compute the 90% confidence interval for the population mean. d. compute the 75% confidence interval for the population mean