Which of the following is NOT a misuse of statistics? Choose the correct answer below. A. Concluding that a variable causes another variable because they have some correlation B. Misleading graphs O c. Utilizing valid statistical methods and correct sampling techniques O D. Making conclusions about a population based on a voluntary response sample

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.