1 - pnorm(4.85, mean = 4.5, sd = 0.5)
pnorm(4.85, mean = 4.5, sd = 0.5)
pnorm(c(4.75, 4.25), mean = 4.5, sd = 0.5)
0.6914625 - 0.3085375
qnorm(c(0.25, 0.5, 0.75), mean = 4.5, sd = 0.5)
qnorm(0.8, mean = 4.5, sd = 0.5)
rnorm(10, mean = 4.5, sd = 0.5)