The bell curve attached below shows the normal distribution of the data.
We are looking the value of X such as the area to its left gives the probability of 0.75
We first need the z-score which we can obtain by reading from the z-table (as shown in the second picture below)
The z-score is = 0.7734
Then we use the following formula to work out X
z-score = (X - Mean) ÷ Standard Deviation
0.7734 = (X - 100) ÷ 15
0.7734×15 = X - 100
11.601 = X - 100
X = 11.601 + 100
X = 111.601 ≈ 112
Hence the third quartile is 112
Answer:
$100 rebate
Step-by-step explanation:
$479.99-$100.00= $379.99 or $479.99-20% =$383.99 so the $100.00 rebate a better offer
Answer: 34.3%
Step-by-step explanation:

To find the percent, divide then multiply by 100:

Answer:
Use the formula
P(X,y) ___y=x__(Reflection)_____P'(y,x)
I think it will help you.
Answer:
3 or more days depending on how his day is going
Step-by-step explanation:
:)