Suppose a Sample of N = 50 Items Is Selected $\mu$

question 17

Multiple Choice

Suppose a sample of n = 50 items is selected from a population of manufactured products and the weight, X, of each item is recorded.Prior experience has shown that the weight has a probabilitydistribution with $\mu$ = 6 ounces and $\sigma$ = 2.5 ounces.Which of the following is true about thesampling distribution of the sample mean if a sample of size 15 is selected?

• A)The mean of the sampling distribution is 6 ounces.
• B)The standard deviation of the sampling distribution is 2.5 ounces.
• C)The shape of the sampling distribution is approximately normal.
• D)All the above are correct.

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Definitions:

General Motors

A multinational corporation that designs, manufactures, markets, and distributes vehicles and vehicle parts.

Sustainable Procurement

The acquisition of goods and services in a way that achieves value for money on a whole life basis in terms of generating benefits not only to the organization but also to society and the economy, while minimizing damage to the environment.

Buying Process

The sequence of steps a consumer or organization follows from recognizing a need, through purchase, to post-purchase evaluation.