FCC of 3005 adults who were home broadband users, 30.5% of According to a survey
ID: 2928505 • Letter: F
Question
FCC of 3005 adults who were home broadband users, 30.5% of According to a survey conducted in a certain year by the Federal Communications Commission those surveyed had switched their service over the past 3 years. Of those who had switched service in the past 3 years, 53% were very satisfied, 37% were somewhat satisfied, and 10% were not satisfied with their service. Of the 60.5% who had not switched service In the past 3 years, 48% were very satisfed, 41% were somewhat satisfied, and 11% were not satisfied with their service. | )What is the probability that a particpant chosen at random had not switched service in the past 3 years and was very satisfied with their service? (b) What is the probability that a participant chosen at random was not satisfied with their service? Need Help? Submit Answer Save Progross Practice Another Version 0-2 paints TanFin 11 7.6.cos My Notes Ask Your Refer to the accompanying Venn diagram. An experiment in which the three mutually exclusive events A, B, and C form a partition of the uniform sample space S is depicted in the diagram. (Round your answers to three decimal places c s 40 25 20 40 25 25 (a) Find PLD). (b) Find PlB ID).Explanation / Answer
total no of students =3005
# students didnt change broadbrand = 60.5% of 3005 = 1818.025
# students who are very satisfied in not chaning = 48% of 1818.025 = 873(rounding off)
hence prob that a randomly vhosen participant hadn't changed in 3 years and very satisfied = 873/3005 = 0.2905
prob that a randomly chosen participant is not satisfied = prob of unsatisfied students that didn't change + prob of unsatisfied students that changed = 10% of 1187 / 1187 + 11% of 1818 /1818 = 0.1 + 0.11 =0.21
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