Answer:
6.861
Step-by-step explanation:
Answer: Our required probability is 0.004672.
Step-by-step explanation:
Since we have given that
Number of adults = 7
Probability of getting adult will watch prime time TV live = 0.8
We need to find the probability that fewer than 3 of the selected adults watch prime time live.
We will use "Binomial Distribution":
here, n = 7
p = 0.8
So, P(X<3)=P(X=0)+P(X=1)+P(X=2)
So, it becomes,


So, probability that fewer than 3 of the selected adult watch prime time live is given by

Hence, our required probability is 0.004672.
To find the mean you add up all the numbers then divide the sum by how many numbers there are :
8+16+12+11+8=55
there are 5 numbers in the equation so you divide 55 by 5 :
55÷5= 11
the mean is 11
hope this helped
Answer: 2x - 1
(9x - 7) - (7x - 6)
9x - 7 - 7x + 6
2x - 1