The Weights of Aluminum Castings Produced by a Process Are

question 14

Multiple Choice

The weights of aluminum castings produced by a process are normally distributed.A random sample of 5 castings is selected; the sample mean weight is 2.21 pounds; and the sample standard deviation is 0.12 pound.The 98% confidence interval for the population mean casting weight is _________.

• A)1.76 to 2.66
• B)2.01 to 2.41
• C)2.08 to 2.34
• D)1.93 to 2.49
• E)2.49 to 2.67

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Definitions:

Vending Machine

An automated machine that provides items such as snacks, beverages, cigarettes, or lottery tickets to consumers after money, a credit card, or a specially designed card is inserted into the machine.

Consumer Surplus

The difference in the collective amount that consumers are poised and able to expend on a product or service and the amount they actually expend.

Consumer Surplus

The gap between the price consumers are prepared to pay for a product or service and the amount they end up spending.

Scented Candles

Candles infused with fragrances intended to release a pleasant aroma when lit, often used for ambience, aromatherapy, or decoration.