One Grocery Clerk Can Stock a Shelf in 60 Min

question 2

Multiple Choice

One grocery clerk can stock a shelf in 60 min, whereas a second clerk requires 84 min to stock the same shelf. How long would it take to stock the shelf if the two clerks worked together? ​

• A) 35 min
• B) 17.5 min
• C) 47 min
• D) 42 min
• E) 144 min

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Definitions:

Null Hypothesis

In statistical testing, a hypothesis that assumes there is no significant difference or effect, serving as the default assumption to test against.

Null Hypothesis

A hypothesis in statistical inference and hypothesis testing that suggests no significant effect or relationship exists in the data.

Critical Value

A threshold value in hypothesis testing, beyond which we reject the null hypothesis in favor of the alternative hypothesis.

P-Value

A measure in statistical hypothesis testing that helps in determining the significance of the results.