Suppose the lengths of phone calls to the receptionist of a small company are i. i.d. with a mean of 5 minutes and an SD of 8 minutes.
Let 1,2,…, be the lengths of calls in minutes, and let
= 1/ [lim(=1→)] ∑ ,
be the sample average length. In each of the following parts, either find the chance exactly, or approximate it, or bound it. Do the best you can with the information given.
a) P(|₁₆ − 5|<4)
b) P(|₁₆₀₀ − 5|<0.4)

2160ft3

step-by-step explanation:

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation:

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step-by-step explanation:

b

step-by-step explanation: