Question

A binomial probability is conducted with given parameters. Use technology to find the probability of x successes in the n independent trials of the experiment

n=7, p=0.4,x>4

p(x<4)=

Answer 1

Answer: P(x < 4)= 0.7102

n=7, p=0.4, x=4

here we are using TI-83 Plus Calculator to calculate required probability

we want to find p(x<4)

we are using function binomcdf(n , p , x ) to calculate probability

We get probability as follows,

P(x<4) is same as P(x 3)

We are calculating P(x 3) because using this command we get

only cumulative probabilities.

P(x < 4)= 0.7102