Suppose the scores of a standardized test are normally distributed. If the population standard deviation is 3 points, what minimum sample size is needed to be 90% confident that the sample mean is within 2 points of the true population mean? z0.101.282z0.051.645z0.0251.960z0.0 12.326z0.0052.576 Use the table above for the z-score, and be sure to round up to the next integer. Provide your answer below: