In the Past, the Average Waiting Time Per Customer at a Fast

question 3

Multiple Choice

In the past, the average waiting time per customer at a fast food restaurant has been 7.5 minutes. The customer waiting time has a normal distribution. The manager claims that the use of a new cashier system will decrease the average customer waiting time in the store. A random sample of 16 customer transactions produces a mean waiting time of 6.3 minutes and a standard deviation of 2 minutes.
-At the 5% level of significance,how would we define the rejection region?

• A)z < -1.645
• B)z > 1.645
• C)t > 1.753
• D)t < -1.753
• E)t < -1.782

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Definitions:

B.F. Skinner

An American psychologist and behaviorist known for his work in developing the theory of operant conditioning, emphasizing the role of reinforcement in shaping behavior.

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Actions or conduct by children that are inappropriate or disruptive, often challenging parents, teachers, or other authority figures.

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Methods and approaches used by parents or guardians in the upbringing of children, influencing their growth and development.

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An Italian-American film actor and sex symbol of the 1920s, known for his roles in silent films such as "The Sheik" and "Blood and Sand".