A service centre received the following number of calls per day over a period of 30 days. 6 5 6 9 7 4 2 4 7 8 3 4 9 8 2 3 5 9 7 8 9 7 5 6 7 7 4 6 2 4
Using a frequency table, find the average number of calls per day. Round your answer to 1 decimal place.
Last week, it rained on 5 days out of 7 days. The probability that if we pick a random day from the week, it will be a rainy day is