A doctor would like to estimate the mean difference in height of pairs of identical twins. The doctor randomly
selects 8 pairs of identical twins and determines the
current height, in inches, of each twin. The data are
displayed in the table.
What is the mean difference (tain 1 - tván 2) and the
standard deviation of the differences?
8
Pair
Twin 1
Twin 2
1 2
08 845
67 65
3
72
72
4
70
89.5
5
85
65
7
48
845
OZ=-0.125, 52=0224
• Za=-0.125, 52=0.5496
O 748=0.125, 5<=0224
O 70=0.125, 548=0.596
8
54
545
63

An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2xdesmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x