Mrs. Galicia gave her sisters $3000 each to invest for future higher education plans. The investment will last 8 years. The table below shows what each sister did with their investment and how it changed over the course of the 8 years:

1.What is the balance of Michelle’s $3000 after 8 years?

2. What is the balance of Kristen’s $3000 after 8 years?

3. What is the balance of Gabriella’s $3000 after 8 years?

4. What is the balance of Judy’s $3000 after 8 years?

5. Who has the most money at the end of the 8 years?

55% are girls and 45% are boys : ) hope this

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160 cm

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you have to add all the sides together

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.