Expected number of arrivals per minute

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The number of arrivals per minute at a bank located in the central business district of a large city was recorded over a period of 200 minutes with the results shown in the table below. Complete? (a) and? (b) to the right.

Arrivals                        Frequency

0                                     14

1                                     21

2                                     50

3                                     44

4                                     31

5                                     22

6                                     11

7                                     5

8                                     2

a. Compute the expected number of arrivals per minute.

µ = _________________?(Type an integer or decimal rounded to three decimal places as? needed.)

b. Compute the standard deviation.

σ =(Type an integer or decimal rounded to three decimal places as? needed.)

Reference no: EM132377618

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