Answer:
13.5
Step-by-step explanation:
Given :
p = 0.68
margin of error, E = 0.1
99% confident interval
alpha, α = 1 - 0.99
= 0.01

∴
(z-critical value)
Sample size = 


= 144.37
= 145 (rounded off)
Therefore, there are 145 businesses does she need to sample to meet this criteria.
Answer:
-5/7
Step-by-step explanation:
Look at the graph. As we move from left to right from (-3, 2) to (4, -3), x increases by 7 and y decreases by 5. Thus, the slope is
m = rise/run = -5/7.
Answer:
1/2%
Step-by-step explanation:
Step-by-step explanation:
The point A(2, 4) is
rotated 270 ccw, so the A' should be on the 4th quadrant
=> A' (4, -2)