Multiple Choice:

Question 19 Compute the coefficient of variation of a data set whose mean is 89 with the standard deviation of 3. A 2.37% B 3.37% 1.37% D 4.37% Question 20 The sample standard deviation of the numbers 2, 5, 6, 8, and 9 is A 2.4495 B 6 2.7386 D 5Question 11 The tensile strength of a certain metal component is normally distributed with a mean of 10,000 kilograms per square centimeter and a standard deviation of 100 kilograms per square centimeter. What proportion of these components exceeds 10,175 kilograms per square centimeter? A 95.99% B 52.28% C 4.01% D 47.72% Question 12 Shane plans to have $3,500,000 in a retirement fund at her retirement. She plans to work for 26 years and has found a sinking fund that earns 4.85% annual interest compounded monthly. How much does she need to contribute to the fund each month to reach her goal? A P6,613.44 B P5, 113.44 C P6, 113.44 D P5,613.44Question 13 A sample of 10 employees in the graphics department of Design Inc. is selected. The employees' ages are: 34, 35, 39, 24, 62, 40, 18, 35, 28, and 35. The ist quartile for the data set is A 35 B 38 C 27 D 24 Question 14 A certain type of storage battery lasts, on the average, 3.0 years, with a standard deviation of 0.5 year. Assuming that battery lives are normally distributed, find the probability that a given battery will last less than 1.785 years? A 0.0875 B 0.0125 C 0.0625 D 0.0075Question 15 Find the variance of sample data set: 7, 14, 16, 24, 3, 20. A 62 B 61 C 64 D 63 Question 16 The reaction times for a random sample of 9 subjects to a stimulant were recorded as 2.4, 3.5, 3.0, 4.2, 2.8, 2.2, 2.5, 4.0, and 3.3 seconds. Calculate the mean. A 3.1 B 3.2 C 3.0 D 2.9Question 17 The hourly wages of five employees in an office are Php25.20, Php39.60, Php32.80, Php92.10 and Php37.50. The median is A Php39.60 B Php35.15 C Php37.50 D Php32.80 Question 18 2 Find the future value of an annuity due of $2.000 monthly at 1.35% for 14 years. A P270,038.27 B P470,038.27 C P370,038.27 D P570,038.27