Teachers in United States high schools teach an average (arithmetic mean) of 80 hours per month, with a variance of 100. What numbers of monthly teaching hours is exactly two standard deviations away from the mean?

ANSWER

The number of sample space for the die is;

The number of sample space for the spinner is;

ANSWER TO QUESTION 1

The probability of getting a 6;

Getting any color except a shade of blue means getting either a red,a yellow, and a green color.

The probability of getting any color except a shade of blue

The probability of getting a 6 and any color except a shade of blue

ANSWER TO QUESTION 2

The probability of getting a 5;

The probability of getting a shade of blue means selecting a dark blue or a light blue;

ANSWER TO QUESTION 3

The even numbers are

The probability of getting an even number,

The probability of getting an even number and a shade of blue

ANSWER TO QUESTION 4

Getting at least 3, means getting a

Probability of getting at least 3

ANSWER TO QUESTION 5

Getting at most 4 means getting a .

The probability of getting at most 4

The probability of getting a yellow,