In the table below x = number of bad checks and P(x) is the P that x bad checks will be passed in a week.
| x |
0 |
1 |
2 |
3 |
4 |
| P(x) |
0.3 |
0.3 |
0.2 |
0.1 |
0.1 |
a, calculate the expected number of bad checks the grocery chain will get in one week.
b. calculate the sandard deviation for the # of bad checks.
c. what is the P that 2 or more bad checks will be passed in one week?
d. what is the P that no bad checks will be passed in a week?
Please show all work in obtaining solution