A Simple Random Sample of 144 Items Resulted in a Sample

question 74

Short Answer

A simple random sample of 144 items resulted in a sample mean of 1080. The population standard deviation is known to be 240. Develop a 95% confidence interval for the population mean.

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The process of reading and correcting written material to ensure it is free of errors before it is published or shared.

Grammar

The set of rules and principles governing the structure of sentences in a language.

Punctuation

The marks used in writing to separate sentences and their elements, clarifying meaning.

Proofread

The process of reviewing written text to correct errors in grammar, spelling, or punctuation.