A poll of 100 senior citizens in a retirement community asked about the types of electronic communication they used. The table shows the joint and marginal frequencies from the poll results. If you are given that one of the people polled uses text messaging, what is the probability that the person is also using e-mail? Express your answer as a decimal. If necessary, round your answer to the nearest hundredth. Uses text mess aging Yes No Total Yes 0.17 0.66 0.83 Uses e - mail No 0.11 0.06 0.17 Total 0.28 0.72 1 a. 0.65 b. 0.61 с. 0.8 d. 0.13
A poll of 100 senior citizens in a retirement community asked about the types of electronic communication they used. The table shows the joint and marginal frequencies from the poll results. If you are given that one of the people polled uses text messaging, what is the probability that the person is also using e-mail? Express your answer as a decimal. If necessary, round your answer to the nearest hundredth. Uses text mess aging Yes No Total Yes 0.17 0.66 0.83 Uses e - mail No 0.11 0.06 0.17 Total 0.28 0.72 1 a. 0.65 b. 0.61 с. 0.8 d. 0.13
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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Transcribed Image Text:A poll of 100 senior citizens in a retirement community asked about the types of electronic communication they
used. The table shows the joint and marginal frequencies from the poll results.
If you are given that one of the people polled uses text messaging, what is the probability that the person is also
using e-mail? Express your answer as a decimal. If necessary, round your answer to the nearest hundredth.
Uses text mess aging
Yes
No
Total
Yes
0.17 0.66
0.83
Uses e- mail
No
0.11
0.06
0.17
Total
0.28
0.72
1
a.
0.65
b. 0.61
с.
0.8
d.
0.13
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