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 â 3 ÷ 1/3 -1 = _______.
5.Solve for X: 5 â (-3) -6 = -4 â (-7) + 8 â 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?
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 â 3 ÷ 1/3 -1 = _______.
5.Solve for X: 5 â (-3) -6 = -4 â (-7) + 8 â 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?
Related questions
| Returns | |||||||
| Year | X | Y | |||||
| 1 | 15 | % | 20 | % | |||
| 2 | 18 | 30 | |||||
| 3 | 9 | 15 | |||||
| 4 | â | 9 | â | 16 | |||
| 5 | 10 | 20 | |||||
| Using the returns shown above, calculate the arithmetic average returns, the variances, and the standard deviations for X and Y. (Do not round intermediate calculations. Enter your average return and standard deviation as a percent rounded to 2 decimal places, e.g., 32.16, and round the variance to 5 decimal places, e.g., 32.16161.) |
| X | Y | |
| Average return | % | % |
| Variance | ||
| Standard deviation | % | % |
