Which statement is true? (a) some quadrilaterals are pentagons (b) some trapezoids are parallelograms (c) all rectangles are trapezoids (d) all trapezoids are quadrilaterals

This assignment is past the original due date o this data is from a sample. calculate the mean, standard deviation, and variance 16.7 11.1 46.7 14.8 13.3 16.6 18.5 47.3 42,8 show the following answers to 2 decimal places. sample mean- sample standard deviation ( use the standard deviation above for your calculation.) sample variance ooops- now you discover that the data was actually from a population! so now you must give the population standard deviation.