Answer:
The expected number of adult workers with a high school diploma is 4 out of 10
Step-by-step explanation:
4 out of 10 = 40%
Answer:
0.016062.
Step-by-step explanation:
Assume that the population is normal:
~(,
2
) = (1185, 702
).
Then the distribution of the sample mean
̅ =
1 + 2 + 3 + ⋯ + 100
100
is exactly normal with mean
̅= (̅) = = 1185 hours
and standard deviation
̅= (̅) =
√
=
70
√100
= 7 hours.
The standardized variable
=
̅ − ̅
̅
=
̅ − 1185
7
Is distributed as (0,1).
The following value of corresponds to the value ̅= 1200 of ̅:
=
̅−̅
̅
=
1200−1185
7
= 2.142857.
Therefore,
(̅ ≥ 1200) = (
̅ − ̅
̅
≥
1200 − ̅
̅
) = ( ≥
1200 − 1185
7
) = ( ≥ 2.142857) =
= 1 − ( < 2.142857) = 1 − 0.983938 = 0.016062,
because using the command
= NORM. S.DIST(2,142857; TRUE)
from Microsoft Excel we can see that
= 2.142857
gives
( < 2.142857) = 0.983938.
Only rarely, just over one time in a hundred tries of 100 light bulbs, would the average life exceed 1200 hours
(x+2)²+5(x+3)-6=0
(x²+4x+4)+(5x+15)-6=0
x²+9x+13=0
Answer: x²+9x+13=0
Answer:
Solving the Equation would be: y= 7x-37, Finding the Function would be x= 37 over 7
Step-by-step explanation:
Function:
y-5=7(x-6)
0-5=7(x-6)
0-5=7x-42
-5=7x=42
-7x-5=-42
-7x=-42+5
-7x=-37
x=37 over 7
_________________________________
Solving the Equation:
y-5=7(x-6)
y-5=7x-42
y=7x-42+5
y=7x-37
y=7x-37, x ER
You will have to use the formula y-y1=m(x-x1)
Use the coordinates of the given point to fill in y1 and y2 and use the given slope as m.
Then if it is desired for the final equation to be solved for y (slope intercept form) just factor the one side, and solve for y
EXAMPLE: given slope=3 given point that the line passes through= (5,7)
y-y1=m(x-x1)
y-7=3(x-5)
y-7=3x-15
y=3x-15+7
y=3x-8
