Answer: 79=8h +22
Step-by-step explanation: 79 total needed 8h equals 8 times her hourly earning plus 22 what she already haves should equal 79.
......ok.....the orthocenter would be at (1,6)
Answer:
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Step-by-step explanation:
Answer:
P [ Z ≤ 250 ] = 0.1099
Step-by-step explanation:
We have:
Normal distribution
μ = 385 (mean of population
σ = 110 (standard deviation of population)
Z = 250 The our critical value
Therefore:
× [ Z ≤ 250 ] = (Z - μ ) ÷ σ ⇒ × [ Z ≤ 250 ] = ( 250 - 385 )÷110
× [ Z ≤ 250 ] = - 1.2272
As the critical point has 4 decimal and Z table only give three we need interpolate hence from points 1.22 and 1.23
× (values) Probabilty (from z table)
-1.22 0,1112
× = - 1.227 Uknown
- 1.23 0.1093
Diferences :
1.22 - 1.23 = 0.01 0.1112 - 0.1093 = 0.0019
So using rule of three:
0.01 ⇒ 0.0019
Diference between (1.22-1.227) = 0.007 ⇒ ? (α)
α = 0.00133
This value must be subtracted from the probability associated to the point 1.22 which is 0.1112
0.1112 - 0.00133 = 0.10987
P [ Z ≤ 250 ] = 0.10987 ⇒ P [ Z ≤ 250 ] = 0.1099
