Americans receive an average of 20 Christmas cards each year. Suppose the number of Christmas cards is normally distributed with a standard deviation of 7. Let X be the number of Christmas cards received by a randomly selected American. Round all answers to 4 decimal places where possible. ✓.17 b. If an American is randomly chosen, find the probability that this American will receive no more than 23 Christmas cards this year. a. What is the distribution of X? X~ N 20 c. If an American is randomly chosen, find the probability that this American will receive between 21 and 25 Christmas cards this year.

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