1.
2.
<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>
Answer:
When I coma all these neat beaches thought
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:
4x + 7 = 4(x + 3) –5
Step-by-step explana
tion: trustttt :)