To determine customer opinion of their service, Business Depot randomly selects 60 stores during a certain week and surveys all customers present in the store. What type of sampling is used? O A. Simple random B. Stratified OC. Convenience D. Cluster OE. Systematic ...

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A: Total number of girls = 10Total number of boys = 7

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A:

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Q: x y 59.9 72.8 61.4 128.8 33.2 7.2 41.4 -111.7 61.9 160.4 50.3 130.4 47.4 -65.7 43.2 -37.7 48.2 190.5…

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A:

Q: Oil pipes ~ Oil field pipes are internally coated in order to prevent corrosion. Researchers…

A: Standard deviations=σ=0.5,α=0.05,marginoferror=e=0.15