1. D
2. A
3. 79
I'm not confident with 3 but 1 and 2 are for sure correct
Answer:
120
Step-by-step explanation:
9.6÷0.08=120
hope this helped
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.
