3.People at a coffee shop were asked how many DVD's they purchased in the last month....

Question

Question

3.People at a coffee shop were asked how many DVD's they purchased in the last month. The results are given in the table below.

a. Does the table represent a probability distribution?

A. Yes B. No

b. If "yes", give the mean (μ) and standard deviation (σ), if "no", give at least one requirement that is not met.

Answer 1

Answer #1

solution

=0.385+0.241+0.135+0.109+0.087=0.957

sum of probability not equal to 1

so , it is not a probability distribution

Answer 2

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