A box contains 4 quarters, 3 dimes, and 2 nickels. a. Two coins are selected at...

A box contains 4 quarters, 3 dimes, and 2 nickels.

a. Two coins are selected at random without replacement one at a time. Compute the probability that the first coin is a dime and the second is a nickel.

b. Three coins are selected at random with replacement. Compute the probability that at least one of them is a nickel.

c. Construct a probability distribution of the number of quarters selected for a procedure of selecting three coins without replacement.

d. Copy the probability distribution you constructed below and extend it to compute the expected number and the standard deviation.

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