Answer:
D. a = 60 and b = 58.8
Step-by-step explanation:
Z-score:
In a set with mean
and standard deviation
, the z-score of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Z-score for data point a is 0.
This means that a is the mean, that is, a = 60.
The z-score for data point b is -0.4.
This means that b must be a value below the mean, that is, a value below 60.
The option that satisfies a = 60 and b < 60 is option D, which is the answer.
we know that
Two angles are supplementary if their sum is equal to
degrees
in this problem we have


so
therefore
<u>the answer is</u>
The two angles are supplementary
He will bye 16 pens hope that helps u
Look at it this way 1(700)*1(20). can u do it now?
9514 1404 393
Answer:
512 million
Step-by-step explanation:
Expected value is the sum of the products of probability and the value associated with that probability. Here, it is the sum ...
0.4(390) +0.4(890) +0.2(0) = 512 . . . million
The expected value of the loss over a 5-year period is $512 million.