statistic
posted by mark .
A survey was made of 100 customers in a department store. 70 of the customers indicated they visited the store because of a newspaper advertisement. The remainder had not seen the ad. A total of 40 customers made purchases; of these customers, 30 had seen the ad. What is the probability that a customer who saw the ad. made a purchase?
Respond to this Question
Similar Questions

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 … 
Statistics
According to a recent survey, 75% of all customers will return to the same grocery store. Suppose 8 customers are selected at random: A) What is the probability that exactly five of the customers will return? 
Data Management
A store manager believes that 42% of her customers are repeat business (have visited her store within the last two weeks). Assuming she is correct, what is the probability that out of the next 500 customers, between 200 and 250 customers … 
Statistics
A department store is running a promo one Saturday by giving out coupons for $10 of free merchandise. However, onethird of customers spend $40, and onethird spend$75. The remainder of customers who come in the store do not take advantage … 
statistics
Fortyfour percent of customers who visit a department store make a purchase. The probability, rounded to four decimal places, that in a random sample of 9 customers who will visit this department store, exactly 6 will make a purchase … 
statistics
Fortyfour percent of customers who visit a department store make a purchase. The probability, rounded to four decimal places, that in a random sample of 9 customers who will visit this department store, exactly 6 will make a purchase … 
statistics
On the average five customers visit a children department store each hour. Using Poisson distribution, calculate the probability of three customers shop at the store. 
statistics
According to a survey, only 20% of customers who visited the web site of a major retail store made a purchase. Random samples of size 50 are selected.Tthe mean of all the sample proportions of customers who will make a purchase after … 
Statistics
According to a recent survey, 65% of all customers will return to the same grocery store. Suppose 11 customers are selected at random,what is the probability that A) exactly 5 will return? 
Statistics
According to a recent survey, 65% of all customers will return to the same grocery store. Suppose 11 customers are selected at random,what is the probability that A) exactly 5 will return?