A coin is tossed twice. Let Z denote the number

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A coin is tossed twice. Let Z denote the number of heads on the first toss and W the total number of heads on the 2 tosses. If the coin is unbalanced and a head has a 40% chance of occurring, find
(a) The joint probability of W and Z;
(b) The marginal of W;
(c) The marginal of Z;
(d) The probability that at least 1 head occurs.

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...

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A coin is tossed twice. Let Z denote the number

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