1. [The principal of a charter school in Tampa believes that the 10s of its students are above the national average of 100. From the past experience, IQ is normally distributed with a standard deviation of 10. A random sample of 20 students is selected from this school and their 10s are observed. The following are the observed values. 95911109313311911310711089113100100124116113110106115113 a) Test for the normality of the data. Use R. ( bi) Find a point estimator and a 95% confidence interval for the population mean. e) Do the IQs of students at the school run above the national average at o: = 0.01