2) To make cookies, you mix the dry ingredients, sugar and flour. Based on the table below, write the ratio of cups of flour used to cups of sugar used in simplest form:
b) If you use 35 cups of flour, how many cups of
sugar will you use? Show your work below.
a) Complete the ratio table. Make sure
to show the relationship between each
equivalent ratio using arrows.
Flour (cups) Sugar (cups)
5
15
12
25
Sentence:
28

cause it equals more

y=20x

: )

hope this

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.