Answer:
The variance is 
Step-by-step explanation:
From the question we are told that
The sample size is n = 21
The sum of squares is 
Generally the variance is mathematically represented as

substituting values


5 x 1,000 = 5,000 a week or 20,000 a month.
take 1,000 divide by 5 and you get 200 a day
$400 on december 31
Answer:
a=c
Step-by-step explanation:
This is because of the transitive property; which states that if a=b and b=c, then a=c.
Here you go. A quick picture to demonstrate the problem. Hope this helps!! <span />