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Statistics - Chapter 6 Discrete Probability Distributions
The Central Intelligence Agency has specialists who analyze the frequencies of letters of the
alphabet in an attempt to decipher intercepted messages. In standard English text, the letter e is
used most often at a rate of 12.702% . In an intercepted message sent to Iraq, a page of 1516
characters is found to have the letter e occurring 175 times. Is this unusual?

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  • 1. Statistics - Chapter 6 Discrete Probability Distributions The Central Intelligence Agency has specialists who analyze the frequencies of letters of the alphabet in an attempt to decipher intercepted messages. In standard English text, the letter e is used most often at a rate of 12.702% . In an intercepted message sent to Iraq, a page of 1516 characters is found to have the letter e occurring 175 times. Is this unusual?