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:
well the first way would be by giving them 30 grams of popcorn each. She can also give them each 2 of 15 grams i guess but if that doesn't count you can just put no.
Step-by-step explanation:
Answer:
The domain is 
∈ 
Step-by-step explanation:
Given the fucntion 
:
And the function 
:
You must multiply them in order to get 
. Then, this is:
You can notice that it is a Rational function.
Since the denominator cannot be zero, the domain of this function will be all the real numbers except those that makes the denominator zero.
Then, you must equate the denominator to zero and solve for "x":
Therefore, the domain is ∈
You have 2 apples.
You can get this by subtracting the 3 from the 5 you originally had.
