Answer:
(14, 22)
Explanation:
The amount of time that customers have to wait for their food is normally distributed with:
![undefined](https://tex.z-dn.net/?f=undefined)
• Mean = 18 minutes
,
• Standard deviation = 4 minutes.
The Empirical Rule
For normal distributions, the empirical rule states that:
• 68% of observed data points will lie inside one standard deviation of the mean.
,
• 95% will fall within two standard deviations
,
• 99.7% will occur within three standard deviations.
By the empirical rule, 68% of observed data points will lie inside one standard deviation of the mean.
Therefore, the interval of minutes that the middle 68% of customers have to wait is:
![(\mu-\sigma,\mu+\sigma)=(18-4,18+4)=(14,22)](https://tex.z-dn.net/?f=%28%5Cmu-%5Csigma%2C%5Cmu%2B%5Csigma%29%3D%2818-4%2C18%2B4%29%3D%2814%2C22%29)
The interval is (14, 22).
Answer:
option D
Place the point of the compass on point A and draw an arc across AB
Step-by-step explanation:
Following are the steps to follow to draw a perpendicular bisector of AB
Step 1
Place the compass at one end of line segment and adjust the compass to slightly longer than half of the line AB.
Step 2
Place compass on point A and draw arcs above and below the lineAB.
Step 3
Keeping the same compass width, draw arcs from point B.
Step 4
Place ruler where the arcs cross, and draw the line segment.
Answer:
1. 3
2. 20
3. 240
4. 1600
Answer: 1863
Step-by-step explanation:
R + d = 1750
r = d + 450
d + 450 + d = 1750
2d + 450 = 1750
2d = 1750 - 450
2d = 1300
d = 1300/2
d = 650 <=== what Dustin pays
r = d + 450
r = 650 + 450
r = 1100 ...Robert pays 1100
the answer will be 2.5 hope that helps you