n = (1.645/0.03)^2 = 576.5625
Therefore, Dylan must have a sample size of 577 high school students to get a margin of error less than 0.03.
Dylan wants to determine a 90 percent confidence interval for the true proportion of high school students in the area who attend their home basketball games. How large of a sample must he have to get a margin of error less than 0.03? [To find n, use the value p* = 1/2 for the sample proportion and the values for z* from Table C.]
1 answer
1 answer