Question: Random digits. Each entry in a table of random digits like Table B has probability 0.1 of being a 0, and digits are independent of

Random digits. Each entry in a table of random digits like Table B has probability 0.1 of being a 0, and digits are independent of each other.

(a) What is the probability that a group of five digits from the table will contain at least one 0?

(b) What is the mean number of 0s in lines 40 digits long?

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