Complex numbers should be in the form( a + bi) where " a " and " b " need to have explicitly stated values.
For example: { 1 + 1i } is valid whereas { 1 + i } is not. { 0 + 9i } is valid whereas { 9i } is not.
In a survey, 55 % of the voters support a particular referendum. If 40 voters are chosen at random, and X is the number of voters that support this referendum, find the mean and variance of X. Place the mean in the first blank 21.5 and place the variance in the second blank. 9.0
13.
Accepted characters: numbers, decimal point markers( period or comma), sign indicators(-), spaces( e. g., as thousands separator, 5 000), " E " or " e "( used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker.
Complex numbers should be in the form( a + bi) where " a " and " b " need to have explicitly stated values.
For example: { 1 + 1i } is valid whereas { 1 + i } is not. { 0 + 9i } is valid whereas { 9i } is not.
A DVD rental business determines that customers will rent X number of DVDs according to the following distribution:
Number
1 2 3 4 5 of DVDs rented X