Answer:
4.4% of the population with IQ between 120 and 125.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 100
Standard Deviation, σ = 15
We are given that the distribution of IQ scores is a bell shaped distribution that is a normal distribution.
a) Let X be a person's IQ score.
Then, density functions for IQ scores is given by:
b) P(population with IQ between 120 and 125.)
Formula:
Step-by-step explanation:
The function that best describes the graph is y = (x - 1)² (C).
We need the radius to find the surface area. Since we have the circumference we can use that to find the radius.
C = 2πr
23 = 2(3.14)r
23 = 6.28r
23/6.28 = r
3.66 = r
Now use the radius to find the surface area.
SA = 4πr²
SA = 4(3.14)(3.66)²
SA = 168.33
Surface area is C. 168 cm²
Hope this helps :)
Answer:
A, B, D
Step-by-step explanation:
A is true. From week 5 to week 11, the curve goes down.
B is true. After week 11, the curve goes up.
C is false. The curve passes $320 twice in the first ten weeks, not three times.
D is true. The curve starts at about $110.
E is false. As time increases, the graph goes up. As time decreases, the graph goes down.
