Sorry took so long doing homework at the same time! lol
ok so, all you have to do is divide 3.76 by 4 to get unit $:
3.76/4= $0.94
Hope this helps!! :)
Answer:
Step-by-step explanation:
Both parts of the ratio can be divided by 9
81/9 = 9
72/9 = 8
The ratio is 9:8
54/48 is also 9:8
54 / 6 = 9
48/6 = 8
The ratio is 9:8
63:56 is also an answer
63 / 7 = 9
56/7 = 8
The ratio is 9:8
The others don't work. You can just look at them to see why.
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.
