Answer:
0.6048
Step-by-step explanation:
Given the following :
Assume a normal distribution :
Mean (m) = 105
Standard deviation (sd) = 20
Find the probability that a randomly selected adult has an IQ between 88 and 122 .
Z = (x - m) / sd
For IQ score of 88:
Z = (88 - 105) / 20
Z = (-17) / 20
Z = - 0.85
For IQ score of 122:
Z = (122 - 105) / 20
Z = (17) / 20
Z = 0.85
P(-0.85<Z<0.85) = P(Z < 0.85) - P(Z < - 0.85)
P(-0.85<Z<0.85) = (0.8023 - 0.1977)
P(-0.85<Z<0.85) = 0.6048
Answer:
Area= b*h
- 9*5=45km^2
Step-by-step explanation:
Y = 1/3x
This is explained with using rise over run, as the point rises 1 time and moves over 3 times from the y intercept, hence the name. Hope this helps, and makes sense, too!
Answer:
Step-by-step explanation:
Earnings = 5 + 7.50x You want to earn 50.00
50 = 5 + 7.50x Set up equation
45 = 7.50x Subtract 5
45/7.50 = (7.50/7.50) x Divide by 7.5
x = 6
You need to work 6 hours.
<span>30% * ?= 48
? =
48 : 30% =
48 / (30 : 100) =
(100 * 48) / 30 = 160</span>
