Accepted characters : numbers, decimal point markers (period or comma), sign ind

Question

Accepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker.
Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values.
For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.

Find a 95% confidence interval for the mean profit.

A 95% confidence interval for the mean profit would be [$ ...?....,$.....?.... ] (round to two decimal places)

Explanation / Answer

Let's suppose say mean profit is Mu

Let Standard deviation be S

therefore 95% confidence interval would be (Mu-1.96*S , Mu+1.96*S)

Lower limit = Mu - 1.96*S

Upper limit = Mu + 1.96*S

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