A coin has a probability p = 0.3 of landing on heads after it is flipped. Let X be the number of heads observed after the coin is tossed three times.
(a) Find the probability mass function (PMF) of X.
(c) Find the mean (µ) and the standard deviation (σ) of X.
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A coin is tossed three times. X is the random variable for the number of heads occurring. a) Construct the probability distribution for the random variable X, the number of head occurring. b) Find P(x=2). c) Find P(x³1). d) Find the mean and the standard deviation of the probability distribution for the random variable X, the number of heads occurring.
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