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a A manager at a bus company wants to survey employees about the new uniforms Which of the following best describes a systematic sample of employees The manager uses a computer program to draw 72 employees at random and selects these employees Every set of 72 employees is equally likely to be drawn by the computer program The manager forms 6 groups of employees based on the departments the employees are in Then she selects 12 employees at random from each group The manager takes a list of the employees and selects every 3rd employee until 72 employees are selected 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 convenience sample of seats The supervisor uses a computer program to draw so seats at random and selects these seats Every set of so seats is equally likely to be drawn by the computer program The supervisor takes a list of the seats and selects every 5th seat until 50 seats are selected All of the seats in the VIP section are easily accessible So the supervisor selects the so seats in this section c A consultant wants to ask workers at a factory about the workers job satisfaction Which of the following best describes a stratified sample of workers The consultant forms groups of 30 workers based on the lengths of time the workers have worked at the factory Then he randomly chooses 3 groups and selects all of the workers in these groups The consultant forms 5 groups of workers based on the workers shifts Then he selects 18 workers at random from each group All of the workers on the second floor of the factory building are easily accessible So the consultant selects the first 90 workers from the second floor to arrive at work on a particular day

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