Suppose the student guesses the answers, we shall consider this a binomial probability problem of success. This implies that getting a question right is p=1/5.
The number of questions is n=20 questions.
The mean of binomial distribution is
mean=n*p= 20*1/5=4
b] The standard deviation of a binomial distribution is given by:
σ=√(n*p*(1-p))
=√(20*0.2*0.8)
=1.79~1.8
Answer:
μ=4 ; σ=1.8
Answer:
{-9,-3,3}
Step-by-step explanation:
We can get the range by substituting each value of x in the given equation.
For x=1 :
y=6(-1)-3=-6-3=-9
For x=0
y=6(0)-3=0-3=-3
For x=1
y=6(1)-3=3
The range is {-9,-3,3}.
Answer:
2
Step-by-step explanation:
Because if you get 1 per day there is 24 hours meaning there is going to be 17,280 in 30 days so you end up making more in 30 days by getting 1,000,000
Answer: b. y=5
Step-by-step explanation:
Take the cube root of both sides.
Calculate.
y=5
The correct answer is ROTATION. Please mark as Brainliest if correct!