0.75 points A survey of a large number of buyers at a suburban Sam\'s Club gave
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Question
0.75 points A survey of a large number of buyers at a suburban Sam's Club gave the proportions of buyers falling in the following income-residential categories: Income Residential Area $10,000 $19,999 S20,000 $39,999 S40,000 and over Urban Suburban Farm 30 10 10 105 170 40 50 75 10 If a single buyer is selected from among all buyers in the region in which the survey is conducted, what is the probability that the buyer: . is from the suburban area? ANSWER: . has an income of at least $20,000 per year? ANSWER: . has an income between $10,000- $19,999 per year, given that the buyer lives on a farm? ANSWER: . lives on a farm, given that the buyer has an income between $10,000-$19,999 per year? ANSWER: . is from a suburban area or has an income of at least $40,000 per year? ANSWER: .does not live on a farm? ANSWER: .is from an urban area and has an income below $20,000 per year? ANSWER: (report your answer to 4 decimal places, using conventional rounding rules) (report your answer to 4 decimal l places, using conventional rounding rules) (report your answer to 4 decimal places, using conventional rounding rules) (report your answer to 4 decimal places, using conventional rounding rules) (report your answer to 4 decimal places, using conventional rounding rules) (report your answer to 4 decimal places, using conventional rounding rules) (report your answor to 4 decimal places, using conventional rounding rulos)Explanation / Answer
from above below is joint distribution table:
a) probability =255/500= 0.51
b)probability =(315+135)/500 =0.90
c)probability = 10/60 =0.1667
d)probability = 10/50 =0.20
e)probability = (50+10+255)/500 =0.63
f)
probability = (500-60)/500=0.88
g)
probability = 30/500 =0.06
10000-19999 20000-39999 40000 and over total urban 30 105 50 185 suburban 10 170 75 255 farm 10 40 10 60 total 50 315 135 500Related Questions
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