Answer:
x =-11
Step-by-step explanation:
5 +x -2 = -8
3 +x = - 8
x = -3 - 8
x= -11
<span>that would be my dear 2/8, 3/12,</span>
The probability that a randomly selected adult has an IQ less than
135 is 0.97725
Step-by-step explanation:
Assume that adults have IQ scores that are normally distributed with a mean of mu equals μ = 105 and a standard deviation sigma equals σ = 15
We need to find the probability that a randomly selected adult has an IQ less than 135
For the probability that X < b;
- Convert b into a z-score using z = (X - μ)/σ, where μ is the mean and σ is the standard deviation
- Use the normal distribution table of z to find the area to the left of the z-value ⇒ P(X < b)
∵ z = (X - μ)/σ
∵ μ = 105 , σ = 15 and X = 135
∴
- Use z-table to find the area corresponding to z-score of 2
∵ The area to the left of z-score of 2 = 0.97725
∴ P(X < 136) = 0.97725
The probability that a randomly selected adult has an IQ less than
135 is 0.97725
Learn more:
You can learn more about probability in brainly.com/question/4625002
#LearnwithBrainly
Answer:
Option A
Step-by-step explanation:
A does not have an x that has 2 or more outputs
9 points = 1 questions
40 points = ? questions
40/9=4.4 questions or just 4 questions
apologies if my answers are wrong