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Section 1 True or False I) As exponential distribution can contain negative K values- 2) Sampling a population is oen necessary because the cost of studying all the items in the population is prohibitive. 3) When deciding to collect sample information rather than collecting information from the population, the amount of time required to collect the information is unimportant. 4) When doing research, knowing the population mean and other population parameters is essential. 5) The items or individuals of the population are arranged in a le drawer alphabetically by date received. A random starting point is selected and then every fth member of the population is selected for the sample. This sampling method is called systematic random sampling. 6) We can expect some difference between sample statistics and the corresponding population parameters. This difference is called the sampling error. Section 2 Multiple Choice T) Waiting times to receive food after placing an order at the local McDonalds Restaurant follow an exponential distribution with a mean of 45 seconds. Calculate the probabihty a customer waits less than 25 seconds. A] 13.4262 E) {1.533 C} {1.1653 D] 13.8347 3) To study the population of consumer perceptions of new technology. sampling of the population is preferred over surveying the population because A) sampling is more accurate B] we can compute zscores C) it is quicker D] sampling methods are simple 9) A marketing firm is studying consumer preferences for winter fashions in four di'erent months. From a population of women 13 to 21 years of age= a random sample of 100' women was selected in J anuarjv. Another random sample of l women was selected in March. Another random sample of 100 women was selected in June. Another random sample of l women was selected in September. 11i'iui'l1at is the sample size? A} 4 E) l C) 41311] D) l l) A statewide sample survey.r is to he conducted. First. the state is subdivided into counties. Seven counties are selected at random: and nther sampling is concentrated on these seven counties. 1What type of sampling is this? A} Simple random E) Systematic random sampling C) Cluster sampling D) Stratied sampling