Chapter 1: Q 1.89. (page 29)
In a designed experiment, there are two factors. One factor has mlevels and the other factor has nlevels. Determine the number of treatments.
Hint: Refer to Exercise 1.87 or Exercise 1.88.
The total number of levels is mn.
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What are the two major types of statistics? Describe them in detail.
Oklahoma State Officials. The five top Oklahoma state officials are displayed in Table 1.2 on page 11. Use that table to solve the following problems.
(a) List the possible samples of size 1 that can be obtained from the population of five officials.
(b) What is the difference between obtaining a simple random sample of size 1 and selecting one official at random?
(c) List the possible samples (without replacement) of size 5 that can be obtained from the population of five officials.
(d) What is the difference between obtaining a simple random sample of size 5 and taking a census of the five officials?
The members of a population are numbered 1-90.
(a). Use Table I in Appendix A to obtain SRS of size 5 from the population. Start at the two-digit number in line number 15 and column numbers 25-26, read down the column, up the next, and so on.
(b). If you have access to a random-number generator, use it to solve part (a).
Best-Selling Albums. The Recording Industry Association of America provides data on the best-selling albums of all time. As of May 28, 2013, the top six best-selling albums of all time (U.S. sales only), are by the artists the Eagles (E), Michael Jackson (M), Pink Floyd (P), Led Zeppelin (L), AC/DC (A), and Billy Joel (B).
(a). List the 15 possible samples (without replacement) of two artists that can be selected from the six. For brevity, use the initial provided.
(b). Describe a procedure for taking a simple random sample of two artists from the six.
(c). If a simple random sampling procedure is used to obtain two artists, what are the chances of selecting P and A? M and E?
Explain the meaning of a
(a) representative sample,
(b) probability sampling,
(c) simple random sampling.
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