A worker assembles one item every 15 minutes, so 160 items are completed in his

Question

A worker assembles one item every 15 minutes, so 160 items are completed in his first week of work. His manager checks his work by randomly selecting a day of the week, then reviewing all the items he completed that day. Does this sampling plan result in a random sample? Simple random sample? Does this sampling plan result in a random sample? Yes, because each item has an equal chance of being selected. No, because each item does not have an equal chance of being selected. No, because all possible groups of n items do not have an equal chance of being selected. Yes, because all possible groups of n items have an equal chance of being selected. Does this sampling plan result in a simple random sample? No, because all possible groups of n items do not have an equal chance of being selected. Yes, because each item has an equal chance of being selected. No, because each item does not have an equal chance of being selected. Yes, because all possible groups of n items have an equal chance of being selected.

Explanation / Answer

Answer: A

Yes, because each item has an equal chance of being selected.

Answer: D

Yes, because all possible groups of n items have an equal chance of being selected.

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