1. Before going on a diet, Joe weighed 235 lbs. He now weighs 205 lbs. His weight has changed by _______% (Round to 2 places after the decimal in percent)
2.Your scores test #1 and test #2 were 73 and 85, respectively. Your score improved by _____%. (Round to 2 places after the decimal in percent)
3. Convert (a) 137.84 % to a decimal; and (b) .06537 to a percent.
4. Solve for the following: (a) 12 + (3 + 7)2 ÷ 10 + 5 = _______; and (b) 9 – 3 ÷ 1/3 -1 = _______.
5. Solve for X: 5 – (-3) -6 = -4 – (-7) + 8 – X. X = ________.
6. A fraction changes from 1/2 to 2/3. The numerator changed by _____%; the denominator changed by _____%; the value of the fraction changed by approximately _____%; and the value of the fraction changed by precisely _____% (Round all answers to 2 places after the decimal in percent)
7. Assume a Normal distribution with an average return of 10% and a standard deviation of 5%. What is the probability of an actual return of (a) more than 15%; and (b) less than zero?