Answer: a. The proportion of the population is between 20 and 30 =0.2356
b. The probability that a randomly chosen value will be between 30 and 40 =0.4680
Step-by-step explanation:
Given : Mean :
Standard deviation :
The formula to calculate z-score :-
For x= 20
For x= 30
For x= 40
a.
b.
<span>The probability of an event occurring is the number of ways the event can occur divided the total number of results possible.
Here, the total number of results is 36 since you can take any of 36 marbles.
You are interested in 28 ways of taking a non blue marble.
P(not blue) = (number not blue)/(total number) so i think it would be i think c or a</span>
Answer:
X= 8
Y= 130
(8, 130)
Step-by-step explanation:
I used a graphing calculator to see where the two equations intersected.
Hope this helped :)