Let X be a discrete random variable with geometric distribution.
Let x be the number of tests and p the probability of success in each trial, then the probability distribution is:
P (X = x) = p * (1-p) ^ (x-1). With x = (1, 2, 3 ... n).
This function measures the probability P of obtaining the first success at the x attempt.
We need to know the probability of obtaining the first success at the third trial.
Where a success is defined as a customer buying online.
The probability of success in each trial is p = 0.3.
So:
P (X = 3) = 0.3 * (1-0.3) ^ (3-1)
P (X = 3) = 0.147
The probability of obtaining the first success at the third trial is 14.7%
Answer:
you have nicce pappeeerrrr
Step-by-step explanation:T-T X_X X_X
Answer:
3.98 x 10^7
Step-by-step explanation:
Answer:36
Step-by-step explanation:
18×2= 36 because if each got halfed, each half would equal one sandwich so there would be 36 sandwiches
