(Solved): A supermarket selected a sample of 240 of its customers and measured how long they took to be serve ...

A supermarket selected a sample of 240 of its customers and measured how long they took to be served at the checkout counter.com customers wait too long, the supermarket intends to hire more checkout personnel . Specifically, the supermarket would like at least 86 customers to be checked out in 8.6 minutes or less. From the data, the go and oth percentiles were computed to be x 9 minutes and 67 minutes, respectively. The range of the data was 13 minutes and the fastest anyone was checked out was 13 minutes Step 5 of S: What percentage of the customers were checked out between 0.7 and 8.9 minutes?