Answer:
a) x=12
b) x=8.71
c) x=10.95
d) x=3.92
e) x=5.152
Step-by-step explanation:
a) x=12.
To have a probability of 0.5, x must be the mean of X.
b) x=8.71
c) x=10.95
d) x=3.92
If we define Y=X-12, then
For z=1.96, the probability around the mean is 0.95. Then:
e) x=5.152
As in the question d, the area around the mean now is 0.99. This happens when z=2.576. Then:
Answer:
6 or 2
Step-by-step explanation:
f(x) = 0.5|x - 4| + 6
0.5|x - 4| + 6 = 7
0.5|x - 4| = 7-6
0.5|x - 4| = 1
|x - 4| = 2
x -4 = ± 2
x-4 = 2 ==> x = 6
x-4 = -2 => x = 2
so the value of x = 6 or 2
Answer:
719.58
Step-by-step explanation: