Atrapezoid has vases of 18 units and 22 units. the area of the trapezoid is 250 square units. what is the height? a. 12.5 units b. 17 units c. 27.5 units d. 25 units

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?