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The number of arrivals per minute at a bank located in the central business district of...

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 23

1 40

2 42

3 34

4 26

5 19

6 10

7 4

8 2

1.. Compute the expected number of arrivals per minute.( INTEGER OR DECIMAL)

2. Compute the standard deviation. (round to 3 decimal places)

Math   Statistics-And-Probability   
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