Group is the answer, things are being put together.
Answer:
22.51% probability that fewer than 4 of them use their smartphones in meetings or classes.
Step-by-step explanation:
For each adult, there are only two possible outcomes. Either they use their smartphones in meetings or classes, or they do not. The probability of an adult using their phone is independent of other adults. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
In which is the number of different combinations of x objects from a set of n elements, given by the following formula.
And p is the probability of X happening
47% use them in meetings or classes.
This means that
10 adult smartphone users are randomly selected
This means that
Find the probability that fewer than 4 of them use their smartphones in meetings or classes.
In which
22.51% probability that fewer than 4 of them use their smartphones in meetings or classes.
Answer:
2
Step-by-step explanation:
2-x=x -2
so making x the subject of formula
-x -x =-2-2
- 2x=-4
x= -4/-2
x=2
For left put 2 on each
On the box over 100 put 82, and put 82 in the box on the right
Answer:
D
Step-by-step explanation: