round(pnorm(2.09), 4) ##This formula tells you from the left side

round(pnorm(-1.14, lower.tail = FALSE), 4) ##This formula tells you from the right side ##All 50 questions could be answered with some version of the pnorm

round(pnorm(1.35), 4) - round(pnorm(-1.62), 4)

print(round(pnorm(2.53), 4) - round(pnorm(0), 4)) print(round(pnorm(1.73), 4)) print(1 - round(pnorm(1.98), 4))

qnorm(0.7123)

# P (Z <= 0) = 0.5 pnorm(0)

# P (Z <= 0.98) pnorm(0.98)

pnorm(0.98) - pnorm(0)

round(pnorm(1.90) - pnorm(1.23), 4)

round(pnorm(-2.15) + pnorm(1.62, lower.tail = FALSE), 4) ## WHAT DOES "lower.tail = FALSE" MEAN

pnorm(1.56) - pnorm(-0.20)

round(qnorm(0.6985), 4)

round(pnorm(0.48) - qnorm(0.48), 4) ## is this wrong??

qnorm(0.74)

qnorm(0.26)

(round(pnorm(1), 4) - 0.5)* 2 ## 84 -.5 x 2

(round(pnorm(2), 4) - 0.5)* 2

(round(pnorm(3), 4) - 0.5)* 2