I need help with these problems please

(a) 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 stratied sample of customers? 0 The analyst uses a computer program to draw 54 customers at random and selects these customers. Every set of 54 customers is equally likely to be drawn by the computer program. 0 The analyst forms 6 groups of customers based on the customers' mortgage amounts. Then, she selects 9 customers at random from each group. O The analyst forms groups of9 customers based on the cities the customers live in. Then, she selects all of the customers in 6 randomly chosen groups. (b) A facilities supervisor at a sports stadium wants to rate the condition of the seats at the stadium. which of the following best describes a systematic sample of seats? rd 0 The supervisor takes a list of the seats and selects every 3 seat until 78 seats are selected. C) All of the seats in the VIP section are easily accessible. So, the supervisor selects the 3'8 seats in this section. 0 The supervisor forms 6 groups of seats based on the dates the seats were last replaced. Then, she selects 13 seats at random from each group. (C) A botanist at a nursery wants to inspect the health of the plants at the nursery. Which of the following best describes a random sample of plants? 0 The botanist forms groups of 12 plants based on the heights of the plants. Then, he randomly chooses 5 groups and selects all of the plants in these groups. 0 The botanist takes a list of the plants and selects every 6th plant until 60 plants are selected. 0 The botanist assigns each plant a different number. Using a random number table, he draws 60 of those numbers at random. Then, he selects the plants assigned to the drawn numbers. Every set of 60 plants is equally likely to be drawn using the random number table