In general, the binomial probability P(X <= x) is approximated by the area under the normal curve to the left of x + - .5.
Indicate whether the statement is true or false
Question 2
Statisticians have shown that the mathematical process that derived the Student t distribution is robust, which means that if the sampled population is nonnormal, the t-test of the population mean is still valid, provided that the population is not extremely nonnormal.
Indicate whether the statement is true or false
