Two online retailers offer a particular style of webcam for sale. The prices of these cameras vary day by day. Consider two groups: Group #1 consists of consumers who purchased a camera from retailer #1 during the past three months and Group #2 consistes of consumers who purchased a camera from retailer #2 during the same period of time. A 99% confidence interval for 1−2 μ
1
−
μ
2
, the difference in population mean sale prices, is 30 to 60 dollars.

(b) The confidence interval provides no strong evidence to support or refute the claim that, on average, students who purchased a camera from retailer #1 spent dollars more than those who purchased a camera from retailer #2.

if he has no friends he cant give them out to his friends

step-by-step explanation:

no friends = cant give anything out

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1

step-by-step explanation:

here's what happens:

1) the graph of f   = x^2 is shifted 2 units to the right.

2) the resulting graph is reflected in the x-axis, so that the parabola now opens down.

3) this final result is transformed up by 5 units.

the answer is c)8

step-by-step explanaction: