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workers? (a) A consultant wants to ask workers at a factory about the workers' job satisfaction. Which of the following best describes a stratified sample of O The consultant assigns each worker a different number. Using a random number table, he draws 80 of those numbers at random. Then, the consultant selects the workers assigned to the drawn numbers. Every set of 80 workers is equally likely to be drawn using the random number table. OO The consultant forms 4 groups of workers based on the workers' shifts. Then, he selects 20 workers at random from each group. The consultant forms groups of 20 workers based on the lengths of time the workers have worked at the factory. Then, he randomly chooses 4 groups and selects all of the workers in these groups. (b) 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? O The manager forms 5 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 6" employee until 60 employees are selected. OO The manager asks for volunteers and selects every volunteer until 60 employees are selected. She selects the volunteers because these employees are easily accessible. (c) 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 random sample of passengers? The host assigns each passenger a different number. Using a random number table, he draws 90 of those numbers at random. Then, he selects the passengers assigned to the drawn numbers. Every set of 90 passengers is equally likely to be drawn using the random number table. The host takes a list of the passengers and selects everv 5" passenger until 90 passengers are selected. O Sub