The following table shows the number of pieces of junk mail that arrives in my

The following table shows the number of pieces of

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The following table shows the number of pieces of junk mail that arrives in my mailbox each day. Number of Pieces of Junk Mail Frequency 2 2 3 14 4 6 5 16 6 12 What is the probability that 3 or fewer pieces of junk mail will be received today? Selected Answer: 0.45 Answers: 0.62 0.45 0.32
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0.56 Question 23 1 out of 1 points The mean and the variance are equal for a ________ probability distribution. Selected Answer: Poisson Answers: uniform binomial normal Poisson Question 24 1 out of 1 points The ounces of soda consumed by an adult next month are an example of a discrete random variable. Selected Answer: False Answers: True False Question 25 1 out of 1 points The mean of the binomial distribution represents the long-term average number of successes to expect based on the number of trials conducted. Selected Answer: True
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Answers: True False Question 26 1 out of 1 points The mean of a discrete probability distribution needs to equal one of the values of the random variables. Selected Answer: False Answers: True False Question 27 1 out of 1 points Because of the ambiguity of the intervals, technically, it's not proper to calculate the mean and standard deviation of ordinal data. Selected Answer: True Answers: True False Question 28 1 out of 1 points Observing whether a customer purchases or does not purchase an extended warranty for a new laptop would be best described using a uniform probability distribution. Selected Answer: False Answers: True False Question 29 1 out of 1 points
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The number of successes in a binomial experiment must range from zero to n. Selected Answer: True Answers: True False Question 30 1 out of 1 points The number of typographical errors found in a manuscript would best be described using a Poisson probability distribution. Selected Answer: True Answers: True False
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