Quiz: One-Sample z-test

The label on bottles of water reads 12.0 oz. A consumer group claims that the bottles are under‐filled. A sample of size 64 has equation. Assume σ = 0.2. Use this data for questions 5 through 11.

A sample of 30 women have a mean height of 63.8 inches and assume σ = 2.5 inches. Use this data for questions 15 through 17.

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