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Section 5.1 Homework Question 3
Section 5.1 Homework
3. Ted is not particularly creative. He uses the pickup line “If I could rearrange the alphabet, I’d put U and I together.” The random variable x is the number of women Ted approaches before encountering one who reacts positively. Determine whether a probability distribution is given. If a probability distribution is given, find its mean and standard deviation. If a probability distribution is not given, identify the requirements that are not satisfied.
Does the table show a probability distribution? Select all that apply.
- Yes, the table shows a probability distribution.
- No, the sum of all the probabilities is not equal to 1.
- No, the random variable x’s number values are not associated with probabilities.
- No, not every probability is between 0 and 1 inclusive.
- No, the random variable x is categorical instead of numerical.
Find the mean of the random variable x. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
- ____ women
- The table does not show a probability distribution.
Find the standard deviation of the random variable x. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
- ___ women
- The table does not show a probability distribution