Classifying samples V A bank analyst wants to ask customers who have a mortgage with the bank about the customers' homebuying experiences. which of the following best describes a random sample of customers? The analyst uses a computer program to draw 72 customers at random and selects these customers. Every set of 72 customers is equally likely to be drawn by the computer program. The analyst forms 6 groups of customers based on the customers' mortgage amounts. Then, she selects 12 customers at random from each group. The analyst spends a day calling mortgage customers and selects the rst 72 customers who answer because these customers are easily accessible. A host on a cruise ship wants to collect data on the time passengers spend at various activities on board. which of the following best describes a cluster sample of passengers? The host assigns each passenger a different number. Using a random number table, he draws 56 of those numbers at random. Then, he selects the passengers assigned to the drawn numbers. Every set of 56 passengers is equally likely to be drawn using the random number table. The host takes a list of the passengers and selects every 7111 passenger until 56 passengers are selected. The host forms groups of 8 passengers based on the passengers' ages. Then, he randomly chooses 7 groups and selects all of the passengers in these groups. A city manager wants to poll residents about a park renovation. which of the following best describes a stratied sample of residents? The city manager forms 6 groups of residents based on the residents' incomes. Then, she selects 13 residents at random from each group. The city manager forms groups of 13 residents based on the streets the residents live on. Then, she selects all of the residents in 6 randomly chosen groups. d The city manager takes a list of the residents and selects every 3r resident until 78 residents are selected