Question

For a normally distributed population, approximately 68% of the population lies within 1 standard deviation of the mean and approximately 95% of the population lies within 2 standard deviations of the mean. In a certain environmental study, the weights of 10,000 fish are normally distributed with a mean of 12.5 ounces and a standard deviation of 4.2 ounces. Approximately what percent of the 10,000 fish have weights between 16.7 and 20.9 ounces?Please have your final answer be a percent. Explain your answer.