Your friend has recommended you a book, so you look for it on an online marketplace. You decide to look at reviews for the book just to be sure that it's worth buying. Let's say that on Amazon, the book only has 80% positive reviews. On GoodReads, it has 95% positive reviews. You decide to investigate a bit further by looking at the percentage of positive reviews for the book on 5 different websites that you know of, and you collect these positive review percentages in a table called reviews. csv.

Required:
Calculate the average percentage of positive reviews from your sample and assign it to intial_sample_mean.