QI)The probability distribution for X= number of heads in 4 tosses of a fair coin is partially given in the table below. k 1 2 3 4 P(k) 1/16 4/16 6/16 4/16 ? 1-What is the probability of getting 4 heads? 2-What is the probability of getting at least one head? 3-What is the probability of getting 1 or 2 heads? 4-What is the value of the cumulative distribution function at 3? 5-What is the standard deviation o ?

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