n = (1.96* 65/5)^2
n = (109.85/5)^2
n = 483
Use the given information to find the minimum sample size required to estimate an unknown population mean u. How many
adults must be randomly selected to estimate the mean FICO (credit rating)score of working adults in a country? We want 95% confidence that the
sample mean is within 5 points of the
population mean, and the population standard deviation is 65.
1 answer