Capacity (megawatts)
20,000
18,200
13,320
10,830
19,500
27,300
30,600
19,300
24,800
23,700

The table shows the output capacities of 10 of the largest hydroelectric power plants in the world. What is the interquartile range of the data?

A) 7785
B) 8445
C) 9325
D) 10475

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?