1
Mr. Baker calculated the area of 4 different styles of rugs. The areas of the 4 rugs are shown.
A = Sie m?
|
A-15 m2
A = 2 m
A = 15 m2
Which list shows the rugs in order from least area to greatest area?
A Oval Rug, Square Rug, Circular Rug, Rectangular Rug
B
C
D
Oval Rug, Square Rug, Rectangular Rug, Circular Rug
Square Rug, Oval Rug, Rectangular Rug, Circular Rug
Circular Rug, Rectangular Rug, Square Rug, Oval Rug

its 50 miles away from the starting point

192/15 = 12.8.

12.8

step-by-step explanation:

192/15 is 12.8.

however, it says to round to the nearest foot, which would equal 13.

irst, find the z score of a score of 80. this is given by the formula z = (x-u)/o, where x is the score, u is the mean, and o is the standard deviation. this gives

z = (80-78)/12 = 1/6 = .1667

now, find what percentile a z score of 1/6 correlates to in the normal distribution.

a z score of 1/6 = .1667 is equivalent to the 56.36th percentile of the distribution. so the probability a score is over this is 1-.5636 = .4364

the mean of a sample mean is equal to the original mean. however, the standard deviation of a sample mean is equal to the original standard deviation divided by the square root of n (sample size). so the new standard deviation is 12/sqrt(16) = 3.

the new z score is 80-78/3 = 2/3 = .667. this is equivalent to the 74.86th percentile. so the probability that the mean will be greater than this score is 1-.7486 = .2514.