statistics

According to a survey, only 15% of customers who visited the web site of a major retail store made a purchase. Random samples of size 50 are selected. a) What proportion of the samples will have less than 15% of customers who will make a purchase after visiting the web site? a) ______________ b) What proportion of the samples will have between 20% and 30% of customers who will make a purchase after visiting the web site? b) ______________ c) The standard deviation of all the sample proportions of customers who will make a purchase after visiting the web site is ________. c) ______________ d) The average of all the sample proportions of customers who will make a purchase after visiting the web site is ________. d) ______________ e) 90% of the samples will have more than what percentage of customers who will make a purchase after visiting the web site? e)