30:60:90
3:6:9
1:2:3
I can’t make sense of given answers
5 over and 4 ^. not sure if this is correct but that’s what i got
Answer:
4, because x= 4 is the maximum value taken by x.
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
3 divided by 1/4 = 3 x 4 = 12
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:


