A hardware store owner is replenishing his stock of base paint for an upcoming home improvement sale. He conducted a survey to d
etermine which paint finish customers prefer on living room walls. The owner asked both homeowners and professional building contractors. The results of the survey are shown in the two-way relative frequency table below. Matte Satin Glossy Total
Homeowners 0.08 0.20 0.24 0.52
Contractors 0.04 0.26 0.18 0.48
Total 0.12 0.46 0.42 1
Approximately what percentage of contractors prefer the glossy finish?
From the table, we know that the relative frequency of Contractors that prefer Glossy finish is 0.18, and the frequency of Contractors is 0.48. Therefore, contractors who prefer the glossy finish represent 0.18/0.48 = 0.375 or 0.375*100 = 37.5% of the total people surveyed.
calculate it by multiplying monthly salary by 12 then divide the total donated to total earned for both people... you Will Find 6.25 % for Jun Wei but for Lixin You Will get 5.51%