11) We wish to develop a confidence interval for the population mean. The shape of the population is not known, but we have a sample of 40 observations. We decide to use the 92% level of confidence. The appropriate value of z is:
A. 1.96
B. 1.75
C. 1.65
D. 2.58
12) A point estimate is
A. Always an estimate of the population mean.
B. Always equal to the population value.
C. An estimate of the population parameter.
D. None of these
) Which of the following is a correct statement about a probability?
A. It may range from 0 to 1.
B. It cannot be reported to more than 1 decimal place.
C. It may assume negative values.
D. It may be greater than 1.
14) Which of the following is not a type of probability?
A. Subjective
B. Relative frequency
C. Classical
D. Independent
15) An experiment is a:
A. Collection of events
B. Always greater than 1.
C. The act of taking a measurement or the observation of some activity.
D. Collection of outcomes.
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