B. Dependent it isn’t clear of why the apple was thrown across the room
The 3 consecutive integers of a sum of 81<span>X+(X+2)+(X+4)=81
3X+6=81
3X=81-6
3X=75
X=75/3</span>
Answer:
x+9=50
Step-by-step explanation:
to find galls height, it tells you to add 9. substitute “gall” for a variable. in this case, 9 is being added to the variable to equal 50.
C, because -3 is negative so it is not a whole number
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.