n= 25 scores from a population with mean =20
z = (80 - 100)/20 = -20/20 = -1 Look up a table of z-scores: Probability = 15.87%
The range of a set of numbers is the difference between the highest and lowest values. In this case, the highest value is 100 and the lowest value is 80. Therefore, the range of the numbers 80, 90, 90, 95, and 100 is 20.
Th find the mean of a data set, you add up all the values in the data set and divide this sum by the number of data values. For example, the mean for the data set 2, 5, 6, and 7 is given as 2 plus 5 plus 6 plus 7, which is 20. You divide this sum by number of values in the data set, which is 4 to get 5 as the mean.
Relative dispersion = coefficient of variation = (9000/45000)(100) = 20.
The value of a random variable that is uniformly distributed between 20 and 100 can be calculated by calculating the sum of numbers from 20 to 100 and dividing it by the difference between 100 and 20. The resulting mean is 58.5.
If you mean 3x + 2x = 100, then x = 20. If you mean something different, you'll need to spell it out.
803 + 20 = 823823 - 100 = 723803 plus 20 minus 100 equals 723.
100 + 20 = 120
100 plus 50=150. 150+20=170.
The total is 400.
200 plus 20 is 220.
percent increase = 50% % increase =|original value - new value|/original value * 100% = |20 - 30|/20 * 100% = 10/20 * 100% = 0.50* 100% = 50%
% change = 15% (decrease)% change = |original value - new value|/original value * 100%= |20 - 17|/20 * 100%= 3/20 * 100%= 0.15 * 100%= 15% (decrease)
20 + (-100 * 5)20 + -500-480
80 + 20 = 100.
20