Answer:
Step-by-step explanation:
This situation can be modeled by a binomial distribution of parameters:
We want to find the probability that at least 90 are in repair.
<u><em>We can approximate this problem to a normal distribution, where:</em></u>
Then we look for
Then we must find the normal standard statistic Z-score
Therefore:
Looking in the standard normal table we obtain:
Answer:
55
Step-by-step explanation:
if you do 3 times a number, 3x and twice more, 2x , that would be 5x divided by 275 which would be 55.
Answer:
31/7 = 4 3/7.....3/7 is less then 1/2....so the closest integer is 4
Step-by-step explanation:
Please mark me brainlist if this helped
Answer:
=42
Step-by-step explanation:
The expression 8×7×9×49×3 can be written in its simplest factor form as follows.
8=2³
49=7²
9=3²
Thus the expression becomes:2³×7×3²×7²×3
Combine the indices to the same base.
2³×3³×7³
Finding the cube root involves dividing the index by three.
Thus ∛(2³×3³×7³)= 2×3×7
=42
