Mean = (89 + 90 + 87 + 95 + 86 + 81 + 102 + 105 + 83 + 88 + 91 + 79)/12 = 1,076/12 = 89.67
a.) 95% C.I. = 89.67 + or - 1.96(0.23) = 89.67 + or - 0.4508 = 89.22 to 90.12
b.) 99% C. I = 89.67 + or - 2.575(0.23) = 89.67 + or - 0.5923 = 89.08 to 90.26
Answer:
neither
Step-by-step explanation:
First, arrange the equations to fit the y=mx + b format
1. 2x - 3y = 8
y = -2/3x - 8/3
2. -x + 4y = 2
y = 1/4x + 1/2
Equations that are parallel have the same slope.
In perpendicular equations, one slope would be x and the other would be -1/x (negative reciprocal)
The equations are neither parallel nor perpendicular, so neither.
Answer:
The answers are A And B.
Step-by-step explanation:
Hope you pass!
