TABLE 7-5 According to a Survey, Only 15% of Customers Who Visited

Short Answer

TABLE 7-5
According to a survey, only 15% of customers who visited the website of a major retail store made a purchase. Random samples of size 50 are selected.
-Referring to Table 7-5, the standard deviation of all the sample proportions of customers who will make a purchase after visiting the website is ________.