Answer: -0.36
Step-by-step explanation:
Given: Mean : 
Standard deviation : 
We know that the formula to calculate the z-score is given by :-

For x=8.2 minutes, we have

Hence, the z-score for this amount of advertising time = -0.36
Answer:
I hope it helps
Step-by-step explanation:
bc this is the only thing I found
Answer:
14/38
21/57
Step-by-step explanation:
You just multiply by 2/2 and 3/3
Answer:
6.96/12
= 0.58
Step-by-step explanation:
each donut costs $0.58. you can check the work by plugging 12 in for x. (0.58x)
i hope this helps :)