1 square inch to 4 square feet. answer is 1/4
There are 5 people who can be guards, 2 will be guards. Since each person has the same chance of becoming a guard, each person has a 2/5 chance of being a guard which makes it unlikely for Diana to become a guard.
Answer:
the probability that a randomly chosen test-taker will score 142 or lower = 0.8643
Step-by-step explanation:
We are given;
Data point; x = 142
Mean; μ = 153
Standard deviation; σ = 10
So,let's find the z-score using;
z = (x - μ)/σ
z = (142 - 153)/10
z = -1.1
From the z-distribution table attached, the probability is;
P(z < -1.1) = 1 - 0.13567 ≈ 0.8643
Answer:
x=7
Step-by-step explanation:
Answer:
It's option 2.
Step-by-step explanation:
8 x 19 = (8 x 20) - (8 x 1)
Verifying:
8 x 19 = 152
8x20 - 8x1 = 160 - 8 = 152.