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 parts a and b to the right.
|
Arrivals |
Frequency |
|
|
0 |
2222 |
|
|
1 |
3737 |
|
|
2 |
4242 |
|
|
3 |
3636 |
|
|
4 |
2828 |
|
|
5 |
2020 |
|
|
6 |
1010 |
|
|
7 |
44 |
|
|
8 |
11 |
a. Compute the mean number of arrivals per minute.
μ=
(Type an integer or a decimal. Do not round.)
b. Compute the standard deviation of arrivals per minute.
σ=
(Type an integer or a decimal. Do not round.)
Homework Answers
a)
mean number of arrivals per minute μ= 2.685
b)
standard deviation of arrivals per minute σ= 1.8099
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