The probability values for the events are 5.3% and 4/49 respectively.
The probability of an event is defined as :
- Number of favorable outcomes / Number of total possible outcomes
Favorable outcomes = (6, 7, 8)
P(greater than 5) = 3/8
For 3 spins :
3/8 * 3/8 * 3/8 = 0.053 = 5.3%
2.)
Number of favorable outcomes = (saturday, Sunday) = 2
Total possible outcomes = 7
P(weekend) = 2/7
P(both parents being born on saturday) = 2/7 * 2/7 = 4/49