Question

suppose we have a set of blood pressure set with a mean of 120 systolic and a sample standard deviation of 20 points assume a normal distribution of what two values should 95% of all systolic bp lie

Answer 1

95% = mean ± 1.96 SD

Answer 2

Suppose the distribution of player heights can be considered symmetric and mound-shaped with mean 72.5 inches and standard deviation 1.2 inches. Use the 68-95-99.7 rule to answer the following questions.