A government agency has specialists who analyze the frequencies of letters of th

Question

A government agency has specialists who analyze the frequencies of letters of the alphabet in an attempt to decipher intercepted messages. In standard English text, a particular letter is used at a rate of 5.25.2%.

a. Find the mean and standard deviation for the number of times this letter will be found on a typical page of 2100 characters.

A government agency has specialists who analyze the frequencies of letters of the alphabet in an attempt to decipher intercepted messages. In standard English text, a particular letter is used at a rate of

5.25.2%.

a. Find the mean and standard deviation for the number of times this letter will be found on a typical page of 2100 characters.

mu equals=

Explanation / Answer

As n = 2100, p = 0.052,

u = mean = np =    109.2 [ANSWER]
  
sigma = standard deviation = sqrt(np(1-p)) =    10.1745565 [ANSWER]

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