Answer:
y-5=6/7(x-4)
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-1-5)/(-3-4)
m=-6/-7
m=6/7
y-y1=m(x-x1)
y-5=6/7(x-4)
They have sold ten full cases
but have sold 10 and a half cases in total
Answer:
Eight thousand fourteen hundred twelve and seven
Answer:
x mean x-mean (x-mean)^2
4.45 8.74 -4.29 18.44
5.50 8.74 -3.24 10.52
5.50 8.74 -3.24 10.52
6.30 8.74 -2.44 5.97
7.80 8.74 -0.94 0.89
11.0 8.74 2.26 5.09
12.2 8.74 3.46 11.95
17.2 8.74 8.46 71.51
mean = average / (n-1) = 69.95 / (8-1) = 8.74
Ok after you do the above table
Add up the last column that will yield: 134.89
Sample variance = 134.99/(n-1) = 134.99/7 = 19.27
Standard deviation is square root of sample variance sqrt(19.27) = 4.39
Step-by-step explanation: