Question: I am not sure how to understand this question and how to find the variance of the number, can you help me? thank you. (i

I am not sure how to understand this question and how to find the variance of the number, can you help me? thank you.

(i will attach my question below)

find the variance of the number, can you help me? thank you.(i

Find the expected value of the number keyed in. Find the variance of the number keyed in. We toss a coin repeatedly until it lands on heads, hitting the numerical keypad of a calculator ran- domly after each and every toss. You may assume that the calculator is capable of displaying in- finitely many digits. Given that the coin landed on heads for the rst time on the third toss

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