2+5+8+1=16
16/4=4
4 is the average (mean)
Answer: Mary picks 9 red flowers.
Explanation:
3/5 = <em>x</em>/15
you first cross mulitiply 5 by <em>x </em>and 3 by 15
5<em>x</em>/5 = 45/5
then you divide 45 by 5 and get 9.
<em>x </em>= 9 red flowers
Probability distributions are used to represent data and their probabilities
The table entry is given as:
<u>Age of House Number of Houses</u>
1 15
2 20
3 25
4 30
Start by calculating the probability of selecting a house that has a certain age.
This is calculated as:

So, we have:




This means that the graph that represents the probability distribution must show that the probability of 1 is 0.17; 2 is 0.22; 3 is 0.28; 4 is 0.33.
Read more about probability distribution at:
brainly.com/question/9385303