Answer:
the question is not clear enough
Step-by-step explanation:
<span>solution:
we have, mean =8.4 hrs, std. deviation = 1.8 hrs, sample size n = 40 , X = 8.9
Probability(X<8.9) = ?
we know that, Z = (X - mean)/(std. deviation/(sqrt. n)) = (8.9 - 8.4)/(1.8/(sqrt.40))
Z = 1.7568
from standard normal probabilities table, we have , P(Z<1.7568) = 0.9608
Hence, probability that the mean rebuild time is less than 8.9 hours is 0.9608</span>
Answer:
6x+2y=8
Step-by-step explanation:
We can multiply both sides of the equation by 3 to get 6x+2y=8.
(Note there is more than one possible answer, you could've multiplied both sides by any number.)
Answer:
x=1 AND Y=3
Step-by-step explanation:
Hm... okay so what i got was A = B+5/2 because that is the only one that fits.