1. The mean of all the numbers is 41.
5. Median : 52
Answer:

Step-by-step explanation:
From the question we are told that:
Standard Deviation 
Let

Since
Significance level 


Therefore


Generally the equation for Sample size is mathematically given by



Answer:
Taylor will charge more by $15
Step-by-step explanation:
Given
Taylor
First Hour = $15
Hourly Rate = $10
Lucy:

For a dog walk of 2.5 hours.
Taylor's charges is:




Lucy's charges is:
Here, we consider
Because 
i.e 2.5 > 2
So, Lucy's charges is:


By comparison;
Taylor will charge more by $15
The difference is calculated by:


Answer:
I believe the answer is C
Step-by-step explanation:
I took the test
Hope this helps!!
:o)
Answer:
pretty sure its C
Step-by-step explanation: