You need to make the bottom fraction a common multiple !!
If x and 71 degrees are side by side, it can be a complementary if it is exactly 90 degrees, supplementary if it is 180 degrees....
You want to find
P(1000 < X < 3000)
where X is normally distributed with mean 1751 and standard deviation 421. Transform X to Z, so that it follows the standard normal distribution with mean 0 and standard deviation 1 using the relation
X = 1751 + 421Z ==> Z = (X - 1751)/421
Then
P(1000 < X < 3000) = P((1000 - 1751)/421 < (X - 1751)/421 < (3000 - 1751)/421)
… ≈ P(-1.783 < Z < 2.967)
… ≈ P(Z < 2.967) - P(Z < -1.783)
… ≈ 0.9985 - 0.0373
… ≈ 0.9612
so that approximately 96.1% of the students fall in this income range.
Answer:
B
Step-by-step explanation:
The retrospective or historic cohort story, is a longitudinal cohort story that considers a particular set of individuals that share the same exposure factor to ascertain its influence in the developments of an occurrence, which are compared with the other set or cohort which were not exposed to the same factors.
Retrospective studies have existed about the same time as prospective studies, hence their names.
Answer:
<u><em>(7.04/44)*7</em></u>
<u><em>7*(7.04/44)</em></u>
Step-by-step explanation:
you have to find the cost of each individual marker:
$7.04/44= .16 <em>(Checked it on a calculator)</em>
then you multiply .16 by 7 because each marker costs 16 cence and you need to find the total cost of 7 markers so your equation should look like:
#1 way to write it: (7.04/44)*7
#2 way to write it: 7*(7.04/44)
