(a) A bank analyst wants to ask customers who have a mortgage with the bank about the customers' home-buying experiences. Which of the followingbest describes a systematic sample of customers?The analyst takes a list of the customers and selects every 5th customer until 50 customers are selected.The analyst spends a day calling mortgage customers and selects the first 50 customers who answer because these customers are easilyaccessible.The analyst forms groups of 10 customers based on the cities the customers live in. Then, she selects all of the customers in 5 randomly chosengroups.(b) Counselors at a college want to poll students about how much time the students spend studying. Which of the following best describes a randomsample of students?The students living in a particular dorm building on campus are easily accessible. So, the counselors select the 72 students living in thatparticular dorm building.The counselors take a list of the students and select every 3rd student until 72 students are selected.The counselors use a computer program to draw 72 students at random and select these students. Every set of 72 students is equally likely to bedrawn by the computer program.(c) The organizers of a conference want to survey attendees about the registration fee. Which of the following best describes a cluster sample ofattendees?OThe organizers form 4 groups of attendees based on the attendees' employment statuses. Then, the organizers select 16 attendees at randomfrom each group.The organizers form groups of 8 attendees based on the day the attendees registered. Then, the organizers randomly choose 8 groups and selectall of the attendees in these aroups. (b) Counselors at a college want to poll students about how much time the students spend studying. Which of the following best describes a randomsample of students?OThe students living in a particular dorm building on campus are easily accessible. So, the counselors select the 72 students living in thatparticular dorm building.The counselors take a list of the students and select every 3rd student until 72 students are selected.The counselors use a computer program to draw 72 students at random and select these students. Every set of 72 students is equally likely to bedrawn by the computer program.(c) The organizers of a conference want to survey attendees about the registration fee. Which of the following best describes a cluster sample ofattendees?The organizers form 4 groups of attendees based on the attendees' employment statuses. Then, the organizers select 16 attendees at randomfrom each group.The organizers form groups of 8 attendees based on the day the attendees registered. Then, the organizers randomly choose 8 groups and selectall of the attendees in these groups.The organizers assign each attendee a different number. Using a random number table, the organizers draw 64 of those numbers at random.Then, the organizers select the attendees assigned to the drawn numbers. Every set of 64 attendees is equally likely to be drawn using therandom number table.

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a) The analyst takes a list of customers and selects every 5th customer until 50 customers are…