Question

Let the random variable X count the number of adults out of five randomly selected adults...

Let the random variable X count the number of adults out of five randomly selected adults who reported sleepwalking. The table gives the probability distribution of X

X P(X=x)
0 0.142
1 0.353
2
3 0.137
4 0.042
5 0.006

A) Determine the missing probability that ensures the tables is a valid discrete probability distribution

B) Compute the probability that among five randomly selected adults fewer than three report sleepwalking

C) Compute the probability that among five randomly selected adults at least four report sleepwalking

D) Compute and interpret P(X=0)

E) Using the mean and standard deviation, describe the number of sleepwalkers in a typical group of five

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