Chapter 1. Intermittent fasting is a growing trend among health-conscious people around the world. Table 1. below shows the streaks in months of 16:8 fasts for a sample of 85 people. Careful with giving responses below (Some answers are numbers but the second question requires a percentage value. Round to two digits where necessary).

Fasting Streak	Frequency
<1 mth	9
1-3 mths	25
4-6 mths	15
7-9 mths	11
10-12 mths	10
13-18 mths	8
>18 mths	7

1. What is the frequency (total number of people) with a fasting streak between 7 and 12 months?
2. What percentage of intermittent fasters have had a streak between 13 to 18 months? %
3. What is the relative frequency of fasting streak under 6 months?
4. What is the cumulative relative frequency for a fasting streak less than or equal to 18 months?