The Central Intelligence Agency (CIA) has specialists who analyze the frequencies of letters of the alphabet in an attempt to decipher intercepted messages

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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 n is used at a rate of 6.65%.

Find the mean and standard deviation for the number of times the letter n will be found on atypical page of 2700 characters.

(Round answer to one decimal place.)

μ=

(Round answer to two decimal places.)

σ=

Give the interval of usual values for the number of n's appearing on a page of 2700 characters. The minimum usual value for a random variable is μ-2.5σ and the maximum usual value is μ+2.5σ. You already found μ

μ  and σ for the random variable X.

Make the calculations using the exact values of μ and σ (not the rounded values you entered above). Enter final answer as an interval using square-brackets and only whole number values. To get the correct whole number values, round your lowest value up to the nearest whole number and round your highest value down to the nearest whole number.

Usual values =