Answer:
68% of the pizzas are delivered between 24 and 30 minutes
Step-by-step explanation:
First we calculate the Z-scores
We know the mean and the standard deviation.
The mean is:
The standard deviation is:
The Z-score formula is:
For the Z-score is:
For the Z-score is:
Then we look for the percentage of the data that is between deviations from the mean.
According to the empirical rule 68% of the data is less than 1 standard deviations of the mean. This means that 68% of the pizzas are delivered between 24 and 30 minutes
Answer:
4 and 4
Step-by-step explanation:
Answer:
21.44 All you need to do is divide the 2.68 by 2 then multiply it by 16
Answer:
m= -12
Step-by-step explanation:
Answer: C
Step-by-step explanation:
x-3y=5, y=x-7 *solve it
the answer is (8,1)
so..
C. (8,1) is a solution to both equations so it is a solution to the system