Americans receive an average of 16 Christmas cards each year. Suppose the number of Christmas cards...
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Americans receive an average of 16 Christmas cards each year. Suppose the number of Christmas cards is normally distributed with a standard deviation of 6. Let X be the number of Christmas cards received by a randomly selected American. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N( b. If an American is randomly chosen, find the probability that this American will receive no more than 19 Christmas cards this year. c. If an American is randomly chosen, find the probability that this American will receive between 15 and 19 Christmas cards this year. d. 87% of all Americans receive at most how many Christmas cards? (Please enter a whole number) Americans receive an average of 16 Christmas cards each year. Suppose the number of Christmas cards is normally distributed with a standard deviation of 6. Let X be the number of Christmas cards received by a randomly selected American. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N( b. If an American is randomly chosen, find the probability that this American will receive no more than 19 Christmas cards this year. c. If an American is randomly chosen, find the probability that this American will receive between 15 and 19 Christmas cards this year. d. 87% of all Americans receive at most how many Christmas cards? (Please enter a whole number)
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Essentials Of Business Statistics Communicating With Numbers
ISBN: 9780078020544
1st Edition
Authors: Sanjiv Jaggia, Alison Kelly
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