A Toy Store Wants to Estimate the Mean Number of Purchases

question 126

Multiple Choice

A toy store wants to estimate the mean number of purchases online daily. The standard deviation is known. If they want to find a 99 percent confidence interval the critical value to use is:

• A) 1.645
• B) 1.98
• C) 2.33
• D) 2.575

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Definitions:

Extended Argument

A complex line of reasoning that may involve multiple premises and conclusions, typically developed over a longer discourse.

Valid

An argument whose structure guarantees its conclusion to be true if its premises are true.

Proposition

A verbalization or pronouncement that indicates an appraisal or conviction.

Categorical

Pertaining to, involving, or based on the categorization of something, often used in logic to describe propositions where statements are made about all members of a category.