What grade is this? I can get the answer of it but I forgot how
Answer:7 4ts
Step-by-step explanation:
Jsjdjsjsjsjsjsjsjsjjsjsjsj I want points
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%
I'm assuming that they are perpendicular, but to be safe I'll say they are supplementary.
180 = 7x - 248 + x + 44
180 = 8x - 204
384 = 8x
/8 /8
48 = x
180 = 2y + 50 + 5y - 17
180 = 7y + 33
147 = 7y
/7 /7
21 = y
Therefore x = 48 and y = 21. If I made any errors please say so and don't report me :3
