pbinomGC function

Graphical Calculator for Binomial Curve Probabilities

Shades desired areas under rectangles of probability histogram for binomial, returns numerical value of the area.

pbinomGC(bound,region="below",size=100,prob=0.5,graph=FALSE)

Arguments

• bound: A numerical vector of length 1 or 2, range of shaded rectangles
• region: A character string. Default is "below". Possible values are "between" (when boundary consists of two numbers), "below", "above", and "outside" (again when boundary consists of two numbers)
• size: Number of trials
• prob: Probability of success
• graph: produce graph?

Returns

Numerical value of probability.

Examples

#This gives P(X <= 6) for binom X with 10 trials, chance of success 0.70 on each trial:
pbinomGC(6,region="below",size=10,prob=0.70)

#This gives P(45 <= X <= 55), where X is binom with 100 trials,
#chance of success on each trial p = 0.50:
pbinomGC(c(45,55),region="between",size=100,prob=0.50)

#This gives P(X >= 7) = P(X > 6), for binom X with 10 trials,
#70% chance of success on each trial
pbinomGC(6,region="above",size=10,prob=0.7)

Author(s)

Homer White hwhite0@georgetowncollege.edu