Calculate the equivalent future cost in year 10 for the following series of disbursements at an interest rate of 10% per year. also, write a single-cell spreadsheet function that will determine the future worth. year disbursement, $ year disbursement, $ 0 5 4000 1 4000 6 5000 2 4000 7 5000 3 4000 8 5000 4 4000 9 5000

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step-by-step explanation:

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.

3.73 * 10^7 is the anser for ttm ur welcome < 3

step-by-step explanation: