Missing question: How many executives should be surveyed?
Solution:
Mean = 13 hours
SD = 3 hours
Confidence level = 95%
Mean viewing time within a quarter of an hour = 0.25 = 1.96*3/sqrt (N)
Where N = Sample population
N = {(1.96*3)/0.25}^2 = 553.19 ≈ 554
Therefore, 554 executives should be surveyed to yield such results.
B is the correct answer. The absolute value of something will always be positive. ALWAYS.
A number cube is a die (singular for dice). List all of the possible outcomes of a die (list numbers of 1 to 6), and next to those numbers, determine if they are even or odd.
- Average Rate of Change/Slope Formula:
So using points (6,71) and (2,y), and the slope of 15, plug them into the slope formula as such:
From here we can solve for y. Firstly, solve the subtraction:
Next, multiply both sides by 4:
Next, subtact both sides by 71:
Lastly, multiply both sides by -1, and <u>your final answer will be 
, or A.</u>
