I think if he invests at an interest rate of 0.1666 which times 100 is 16.66% he will have 12,000 in 6 years assuming its being compounded annually. Using the equation r = (1/t)(A/P - 1) or A=P(1+r/n)^nt And plugging in numbers: 12,000=6000(1+r/1)^(6)(1) and solving for r.
Step-by-step explanation: with a two-tailed hypothesis she can find the way to go deep on the study, she will be able to increase the statistical power. She will be able to separate in specifics groups.