Answer:
a

b

Step-by-step explanation:
From the question we are told that
The data is 87 91 86 82 72 91 60 77 80 79 83 96
Generally the point estimate for the mean is mathematically represented as

=> 
=>
Generally the point estimate for the standard deviation is mathematically represented as

=> 
=> 
Step-by-step explanation:
3x= (-8) -4
x=(-12)/3
x= -4
The answers is D source I take AP Statistics
Answer:
ovlivia makes more per hour than kayle
Step-by-step explanation:
ovlivia makes $8.75 per hour while Kayle makes $8.5 per hour
Step-by-step explanation:
5:3=35
5=35×3
5=105
5÷105=0.05