Question Suppose the finishing times for cyclists in a race are normally distributed. If the population standard deviation is 16 minutes, what minimum sample size is needed to be 90% confident that the sample mean is within 5 minutes of the true population mean? Zo.1o Z1105 Z0325 Z1101 Z0305 1.282 1.645 1.960 2.326 2.576 Use the table above for the zscore, and be sure to round up to the nearest integer