The answer to this question is B
They lost 2 yards is the answer. But its difficult to tell because it could also be they gained -2 yards.
Answer:
0.2839 = 28.93%
Step-by-step explanation:
In order to find find the probability that one car chosen at random will have less than 68.5 tons of coal, we have to find z
Le x be tons of coal in a car
Z = (x – mean)/standard deviation
Z = (x – μ)/ σ
P (x<68.5) = P(z < (68.5-69)/0.9)
P (x<68.5) = P(z < -0.5555)
Then we use the z table to find the area under the curve.
P (x<68.5) = 0.2893
88.32 should be the answer. I don't know if you are supposed to round your answer though. If you are you should be able to figure that out :)
Fifty-seven x thirty-one = one-thousand, seven-hundred and sixty seven. I just guessed and checked. 57x31=1767
