BMAL 590 Quantitative Research Techniques and Statistics Exam. Latest 2020/21.Decision Analysis (Section 8)
1. Which one of the following would not be con... [Show More] sidered a state of nature for a business firm? Minimum wage regulations
2. Assume an investment is made a significant number of times using the same probabilities and payoffs. In this case, the average payoff per investment represents_____. The expected payoff
3. The level of doubt regarding the decision situation where both the possible states of nature and their exact probabilities of occurrence are known as which of the following? Risk
4. The difference between expected payoff under certainty and expected value of the best act without certainty is the _________. Expected value of Perfect Information
5. Which of the following regarding EMV/EOL if false? The EMV decision is always different from the
Analysis of Variance (Section 7)
6. The F-statistic is a one-way ANOVA represents the_______.
Variation between the treatments divided by the variation within the treatments 7. In _________ we can observe the effect on the response variable of at least two factors. One-way analysis of variance
8. The distribution of the test statistics for analysis of variance is the ________. F-Distribution
What is Statistics? (section 1)
9. A sample of 500 athletes is taken from a population of 11,000 Olympic athletes to measure work ethic. As a result we ________. Can make consistent inferences each time work ethic is the outcome
10. When data is collected in a statistical study for only a portion or subset of all elements of interest we are using a _______. Sample
Data Collecting and Sampling (section 2)
11. When a person receives an email questionnaire and places it in their deleted items without responding, they are contributing to ________. Non-response error
12. The difference between a sample mean and the population mean is called the______. Sampling error
Introduction to hypothesis Testing (Section 5)
13. A type I error occurs when we _______. Reject a true null hypothesis
14. In a criminal trial where the null hypothesis states that the defendant is innocent, a Type II error is made when________. A guilty defendant is found not guilty
15. The p-value of the test is the______. The largest a at which a null hypothesis cannot be rejected
Probability (Section 3)
16. Initial estimates of the probabilities of events are known as_____.
Prior Probabilities Independent
17. If the outcome of event A is not affected by event B, then events A and B are said to be ________.
18. The collection of all possible outcomes of an experiment is called ________.A sample space
19. Suppose P(A) = .35. The probability of the complement of A is _______.
Inference about a Population (Section 6) 20. An unbiased estimator is ________.
A sample Statistic, which has an expected value equal to the value of the population parameter
QUIZ Section 1-
A company has developed a new smartphone whose average lifetime is unknown. In order to estimate this average, 200 smartphones are randomly selected from a large production line and tested. Their average lifetime is found to be 5 years. 200 smartphones represents a ________. Sample
Which of the following is a measure of reliability of a statistical inference? Significance level
The process of using sample statistics to draw conclusions about population parameters is called_____.
Doing inferential statistics
Which of the following statements involve descriptive statistics as opposed to inferential statistics?
The alcohol, Tobacco and Firearms Department reported that Houston had 1,790 registered gun dealers in 1997.
A population of all college applicants exists who have taken the SAT exam in the US in the last year. A parameter of the population are______. SAT Scores
QUIZ Section 2
-Which of the following statements is true regarding the design of a good survey?
The questions should be kept as short as possible
-Which method of data collection is involved when a researcher counts and records the number of students wearing backpacks on campus in a given day? Direct Observation
-Manager at electronics store wants to know if customers who purchased video recorder over the last 12 months are satisfied with their products. If there are 4 different brands of video recorders made by the company, which sampling strategy would be best to use? Stratified random sample
-Which of the following types of samples are almost always biased? Self-selected sampled
-_____ is an expected error based only on the observations limited to a sample taken from a population. Sampling error
QUIZ Section 3
Bayes’ Law is used to compute ____. Posterior Probabilities
The classical approach describes a probability_________. In terms of the proportion of times that an event can be theoretically expected to occur
If a set of events includes all possible outcomes of an experiment these events are considered to be________. Exhaustive
Which statement is not correct? If event A does not occur, then its compliment Ai will also not occur
QUIZ Section 4-
The concept that allows us to draw conclusions about the population based strictly on sample data without having any knowledge about the distribution of the underlying population is_________. The central limit theorem
Each of the following are characteristics of the sampling distribution of the mean except________. If the original population is not normally distributed, the sampling distribution of the mean will also be approximately normal for large sample sizes
-Suppose you are given 3 numbers that relate to the number of people in a university sample. The three numbers are 10,20,30. If the standard deviation is 10, the standard error equals___ . 5.77
You are tasked with finding the standard deviation. You are given 4 numbers. Numbers are 5, 10, 15, and 20. The standard deviation equals. 6.455
Two methods exist to create a sampling distribution. Once involves using parallel samples from a population and the other is to use the______. Rules of probability
QUIZ Section 5
The hypothesis of most interest to the researcher [Show Less]