-3 + -2 = -5
-5 + 5 = 0
0 x 2 = 0
Answer:
a) 0.778
b) 0.9222
c) 0.6826
d) 0.3174
e) 2 drivers
Step-by-step explanation:
Given:
Sample size, n = 5
P = 40% = 0.4
a) Probability that none of the drivers shows evidence of intoxication.



b) Probability that at least one of the drivers shows evidence of intoxication would be:
P(X ≥ 1) = 1 - P(X < 1)
c) The probability that at most two of the drivers show evidence of intoxication.
P(x≤2) = P(X = 0) + P(X = 1) + P(X = 2)
d) Probability that more than two of the drivers show evidence of intoxication.
P(x>2) = 1 - P(X ≤ 2)
e) Expected number of intoxicated drivers.
To find this, use:
Sample size multiplied by sample proportion
n * p
= 5 * 0.40
= 2
Expected number of intoxicated drivers would be 2
It is 2 and 3/5 your welcome :)
Answer:

Step-by-step explanation:

Since they're equidistant (equal distances), we can set them equal to one another and solve for x:

Adding 5 to both sides:

Subtracting 2x from both sides:

Dividing both sides by 3:

Therefore:

The answer to your question is 9 x 9 = 81.