1) Unstructured interviews are best used for res 341 finalexam
2) A recent study of breast cancer revealed that 13% of the womenin the sample used antibiotics more than 500 days in theirlifetime. Further, 79% of these “heavy antibiotics users” developedbreast cancer. According to the American Cancer Society, one intwelve women will develop breast cancer at some time in her life.Of the numbers mentioned, which are parameters?
3) Basic business research methods would be used to res 341 finalexam
4) The collection and summarization of the socioeconomic andphysical characteristics of the employees of a particular firm isan example of res 341 final exam
5) Which of the following is an example of statisticalinference?
6) A logically conjectured statement that describes therelationship between two or more variables and is formulated forempirical testing is a res 341 final exam
7) The variable that causes a measurable effect or change on thedependent variable is
8) Survey questionnaires may be effectively used for research todetermine
9) A company is designing a survey to obtain information on thereliability of a product it sells. To obtain the most validresearch information, who should the company send this type ofsurvey to?
10) The following practice is considered ethical when conductingbusiness research:
A. Disclosing some, but not all, financial interests that mayaffect research
11) If a population distribution is skewed to the right, then givena random sample from that population, one would expect that the res341 final exam
12)
Textbook Price Number of Textbooks
$25 to $35 2
$35 to $45 16
$45 to $55 5
$55 to $65 7
$65 to $75 20
Estimate the standard deviation of the price of a textbook.
13)
Textbook Price Number of Textbooks
$25 to $34.99 2
$35 to $44.99 16
$45 to $54.99 5
$55 to $64.99 7
$65 to $74.99 20
Estimate the mean price of a textbook.
14) A supermarket has determined that daily demand for eggs has abell-shaped distribution, with a mean of 55 cartons and a standarddeviation of six cartons. If the supermarket begins each morningwith a stock of 61 cartons of eggs, approximately what percentageof days will there be a surplus of eggs? res 341 final exam
15) Which of these measurement scales has a rank order associatedwith its use?
16) Identify the scale that has no meaningful zero. res 341 finalexam
17) __________ is a measure of the chance that an uncertain eventwill occur.
18) The Information Commons in the main library has 150 personalcomputers. The probability that any of them will require repair ona given day is 0.02. To find the probability that 25 of thecomputers will require repair, one would use what type ofprobability distribution?
19) A multiple-choice test has 20 questions. There are four choicesfor each question. A student comes to class with four differentcolored balls of identical shape and size in her pocket. She hasdecided to draw one ball from her pocket per question and allow thecolor of the ball to select the answer for each question. What typeof probability distribution can be used to figure out her chance ofgetting 10 questions right? res 341 final exam
20) Which of the following cannot generate a Poissondistribution?
21) Which of the following is a characteristic of every binomialdistribution?
22) The average qualifying speed for a championship NASCAR® race is145.65 mph and the standard deviation is 9.45 mph. Only drivers whoobtain z-scores greater than 1.2 will qualify for the race. If thespeeds are normally distributed, what minimum speed must be clockedto compete for the trophy?
23) Trudy Jones recently completed her certification examinationand learned that her z-score was -2.5. The examining board alsoinformed her that a failure to pass would equal all scores thatwere one or more standard deviations below the mean and that thosewith scores higher than two standard deviations above the meanwould receive a special commendation award. Trudy can conclude thatshe res 341 final exam
24) The use of the student’s distribution requires which of thefollowing assumptions?
25) The standard error of the sample mean is equal to 5 when n=25.If the sample size increases by a factor of four, how will thestandard error change?
26) For a sample size of 1, the sampling distribution of the meanwill be normally distributed
27) A 95% confidence interval for the population mean indicatesthat res 341 final exam
28) A random sample of 16 ATM transactions at the First NationalBank of Flintrock revealed a mean transaction time of 2.8 minuteswith a standard deviation of 1.2 minutes. The width, in minutes, ofthe 95% confidence interval for the true mean transaction timeis
29) All other things being equal, which is narrower, a 95%confidence interval with n=100 or a 99% confidence interval withn=30? res 341 final exam
30) When the only sources of variation in a production process arecaused by chance, the process is said to be
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