The probability distribution for the number of students in Statistics classes offered at a small college is given, but one value is missing. Fill in the missing value, then answer the questions that follow.
Find the mean number of students in a Statistics class at the college:
Find the standard deviation of the number of students in a Statistics class at the college:
| X | P(X) |
|---|---|
| 21 | 0.11 |
| 22 | 0.15 |
| 23 | 0.18 |
| 24 | |
| 25 | 0.13 |
Find the mean number of students in a Statistics class at the college:
Find the standard deviation of the number of students in a Statistics class at the college: