Question: how i can solve this and how can i get the standard devotion (SD) ?? The number of arrivals per minute at a bank located

how i can solve this and how can i get the standard devotion (SD) ??

The number of arrivals per minute at a bank located in the central business district of a large 3. Compute the expected number of arrivals per minute. city was recorded over a period of 200 minutes, with the results shown in the table below. Complete (a) and (b) to the right. p: D Arrivals Frequency [a (Type an integer or decimal.) 14 34 45 40 28 18 12 6 3 ODNOU'I--wM'O

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