48*/*per hour

Usually replies in 13 hours

Probability
| 10 other subjects

57*/*per hour

Usually replies in 5 hours

Statistics, Probability
| 10+ other subjects

45*/*per hour

Usually replies in 43 minutes

Statistics, Probability
| 10+ other subjects

38*/*per hour

Usually replies in 7 hours

Statistics, Probability
| 10+ other subjects