View History Bookmarks People Window Help Closs Nobes QH-Fall 2017 CO www Acoord
ID: 2928480 • Letter: V
Question
View History Bookmarks People Window Help Closs Nobes QH-Fall 2017 CO www Acoording to a survey conducted in a certain year by the Federal Communications Commission (PCC) of3005 adults whe those surveyed had switched their service ever the past 3 years. Of those who had switched service n somewhat satted, and 10% were not satisfed with their service. Of the 41% were somewhat satisf ed, and 1 1% were not satisfied with their service. had not switched service te past , years, 48% were very satisfied. (a) What i s the probablity that a partiopant chosen at random had not switched service in the past 3 years and was very satisfied with their service? (b) What is the probebility that a particpant chosen st random was not satisfied with their service Need Help? [Te o Tter Refer to the accompanying Venn diagram. s is depicted in the dsgram. (Round your answers to three decimal places.) An experiment in which the three mutually exclusive events A, 8, and C form a partition of the uniform sample space C S MacBook Air 0Explanation / Answer
Answer:
From the given information we can make the table.
Switched
Not Switched
Total
very satisfied
20.935
29.04
49.975
somewhat satisfied
14.615
24.805
39.42
Not satisfied
3.95
6.655
10.605
Total
39.5
60.5
100
a). P=29.04
b). P=10.605
problem 9.
a). P( D) = (25+25)/(40+25+20+40+25+25)
=0.285714286
=0.286 ( three decimals)
b).
P( B/D) = 25/(40+25+20)
=0.294117647
=0.294
Switched
Not Switched
Total
very satisfied
20.935
29.04
49.975
somewhat satisfied
14.615
24.805
39.42
Not satisfied
3.95
6.655
10.605
Total
39.5
60.5
100
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