The Central Intelligence Agency (CIA) has specialists who analyze the frequencies of letters of the alphabet in an attempt to decipher intercepted messages. In standard English text, the letter s is used at a rate of 5.74%. Find the mean and standard deviation for the number of times the letter s will be found on atypical page of 2500 characters. (Round answer to one decimal place.) μ=μ=  (Round answer to two decimal places.) σ=σ=  Give the interval of usual values for the number of s's appearing on a page of 2500 characters. (Enter answer as an interval using square-brackets only with whole numbers.) usual values =  In an intercepted message sent to a foreign country, a page of 2500 characters is found to have the letter s occurring 188 times. Is this unusual? yes, it is unusual no, it is not unusual

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.