b) The following table shows the results of a sample survey carried out by a fast-food restaurant to determine whether persons had noticed an improvement in its service in the last month Voting Results Sex Improvement Seen No No improvement Opinion Male 25 21 34 Female 16 38 16 How many people were in the survey? i. A patron was selected at random from the sample. i. a) Determine the probability that the patron thought that there was an improvement in service. b) Determine the probability that the patron was a female or thought that there was no improvement in the service. c) Given that the patron thought there was an improvement, what is the probability that the patron was a male?
b) The following table shows the results of a sample survey carried out by a fast-food restaurant to determine whether persons had noticed an improvement in its service in the last month Voting Results Sex Improvement Seen No No improvement Opinion Male 25 21 34 Female 16 38 16 How many people were in the survey? i. A patron was selected at random from the sample. i. a) Determine the probability that the patron thought that there was an improvement in service. b) Determine the probability that the patron was a female or thought that there was no improvement in the service. c) Given that the patron thought there was an improvement, what is the probability that the patron was a male?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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Transcribed Image Text:b) The following table shows the results of a sample survey carried out by a fast-food
restaurant to determine whether persons had noticed an improvement in its service in the
last month
Voting Results
Sex
Improvement
Seen
No
No
improvement
Opinion
Male
25
21
34
Female
16
38
16
i.
How many people were in the survey?
i.
A patron was selected at random from the sample.
a) Determine the probability that the patron thought that there was an improvement in
service.
b) Determine the probability that the patron was a female or thought that there was no
improvement in the service.
c) Given that the patron thought there was an improvement, what is the probability that
the patron was a male?
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