From a sample of 200 items, 12 items are defective. The point estimate of the population proportion defective will be:
a. 12
b. 0.06
c. 16.67
d. 0.12
e. 1.6
Q. 2In a one-way ANOVA, if the null hypothesis that all population means are equal is rejected, then we can conclude that the alternative hypothesis is true and that all population means differ.
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Q. 3A point estimate is defined as:
a. the average of the sample values
b. the average of the population values
c. a single value that is the best estimate of an unknown population parameter
d. a single value that is the best estimate of an unknown sample statistic
e. a single value that is the best estimate of the upper range of a population parameter
Q. 4In a one-way ANOVA, if the sum of squares for error (SSE) is large relative to the sum of squares for treatments (SST), this is an indication that the population means are likely to be different.
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Q. 5An unbiased estimator is:
a. any sample statistic used to approximate a population parameter
b. a sample statistic, which has an expected value equal to the value of the population parameter
c. a sample statistic whose value is usually less than the value of the population parameter
d. a sample statistic whose value is usually greater than the value of the population parameter
e. any estimator whose standard error is relatively small
Q. 6In a one-way ANOVA, total SS is equal to 12,345, and SST is equal to 10,685, then SSE = 1,660.
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