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 
. 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.