Part a), solve this system of equations:
x + y = 5
x - y = 2.25
2x = 7.25
x = 3.625
y = 1.375
part b), solve this system of equations:
x + y = 5
x = 3y
y = 1.25
x = 3.75
Answer:
Answer is below
Step-by-step explanation:
The outliers are 20 and 78 because they are not close to the other numbers. They have a great difference between them and the other numbers.
New Orleans
Indio
Death Vally
Denver
Wenzuan
Answer: 2.28 %
Step-by-step explanation:
Given : Mean : 
Standard deviation :
The formula to calculate the z-score :-

For x = 72

The p-value = 

In percent, 
Hence, the percentage of pediatricians work more than 72 h per week = 2.28 %
78 rounded to the nearest tenth is 80