Nonlinear optimization models are considerably easier to solve than linear or integer models.
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Q. 2When a customer enters a store there are three outcomes that can occur: buy nothing, buy a small amount, or buy a large amount. In this situation, if a customer buys a large amount, he or she cannot also buy a small amount or buy nothing.
Thus the events are:A) independent.
B) mutually exclusive.
C) all inclusive.
D) dependent events.
Q. 3In situations involving two or more variables, both histograms and bar charts can be used for multiple variables on the same graph.
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Q. 4A cell phone service provider has selected a random sample of 20 of its customers in an effort to estimate the mean number of minutes used per day.
The results of the sample included a sample mean of 34.5 minutes and a sample standard deviation equal to 11.5 minutes. Based on this information, and using a 95 percent confidence level:
A) the critical value is z = 1.96
B) the critical value is z = 1.645
C) the critical value is t = 2.093
D) The critical value can't be determined without knowing the margin of error.
Q. 5Assume a sample of size n = 12 has been collected. To perform a hypothesis test of a population variance using a 0.05 level of significance, where the null hypothesis is:H0 : 2 = 25 The upper tail critical value is 21.92.
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Q. 6The variance in the diameter of a bolt should not exceed 0.500 mm. A random sample of n = 12 bolts showed a sample variance of 0.505 mm. The test statistic is 2 = 11.11.
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