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Consider the following to answer the question(s) below:
A consumer group was interested in comparing the operating time of cordless toothbrushes manufactured by two different companies. They took a random sample of 18 toothbrushes from Company A and 15 from Company B. Each was charged overnight and the number of hours of use before needing to be recharged was recorded. Company A toothbrushes operated for an average of 119.7 hours with a standard deviation of 1.74 hours; Company B toothbrushes operated for an average of 120.6 hours with a standard deviation of 1.72 hours. Do these samples indicate that Company B toothbrushes operate more hours on average than Company A toothbrushes?
-The correct null and alternative hypotheses (assuming Company A is group 1 and Company B is group 2) are
Sales Manager
A professional responsible for directing and overseeing a team of salespeople, setting goals, and developing strategies to increase sales performance.
Forced Distribution
A performance management system where employees are ranked in accordance with a pre-determined distribution curve.
Multiple Rater System
A feedback system typically used in performance assessments where several evaluators provide input on an individual's performance.
Effective Appraisal
The process of evaluating an employee's job performance in a constructive manner, aiming to encourage professional growth and improve future performance.
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