Answer:
a. Sunday
Step-by-step explanation:
Probability ranges from 0-1. 0 being the least chance and one being completely sure.
The probability of receiving a tip of at least 15% for the different days is as follows
Monday : 82/126 = 0.65
Tuesday: 87/106= 0.82
Wednesday: 93/103= 0.90
Thursday : 68/126 = 0.54
Friday :91/153= 0.59
Saturday: 83/156 = 0.53
Sunday: 64/137= 0.46
The day with the lowest probability is Sunday.