15. At the bake sale, students brought in 115 different types of cupcakes, 95 types of brownies, and 85
types of cookies. How many different types of
baked goods did the students bring in
They brought in 180 different types of
baked goods.
Spectrum Math
Grade 4
14

false

step-by-step explanation:

false : it can not go to 9 the highest that part can go is 7

here is your proof

and?

step-by-step explanation:

step-by-step explanation:

oh the deck is the size of my dic k so about 320 inches hope u get my dic k as the answer

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.