A worker assembles one item every 6 minutes, so 400 items are completed in his f

Question

A worker assembles one item every 6 minutes, so 400 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? 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. Does this sampling plan result in a simple random sample? Yes, because all possible groups of n items have 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 each item has an equal chance of being selected.

Explanation / Answer

(a) Yes,because each item has an equal chance of being selected

(b) No,because all possible groups of n items do not have an equal chance being selected

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