Answer:
130
Step-by-step explanation:
2x+5x+5=180
7x+5=180
7x=175
x=25
5(25)+5=125+5=130
I am a lefty, and I know for a fact that 40% off the population write with there left
Yes, because only equal groups can be multiplied
Answer:
a) This will result in a binomial distribution.
b) This will not result in a binomial distribution.
Step-by-step explanation:
Binomial probability
The binomial probability is the probability of exactly x successes on n repeated trials, and each trial can only have two outcomes.
So:
(a) The National Health Institute checks on 100 people who had a certain type of cancer in the year 2000 and records whether they are alive or not.
Fixed number of trials(each person checked is a trial) with a fixed probability(there is a probability that the person who had that type of cancer is alive).
So it results in a binomial distribution.
(b) Calling all your friends until you have 2 people willing to play on your volleyball team.
There is not a fixed number of friends that are going to be asked, so this does not results in a binomial distribution.
