PSYC 300 Week 6 and 8 Final Exam 1 With All the Answers 180/180 Graded A+

CONT. Week 6 Part 1 of 1 - 40.0 Points Question 1 of 20 2.0 Points How are inferential statistics different from descriptive statistics? A.Descriptive statistics allow drawing inferences from the sample to a target population. B.Descriptive statistics verify the accuracy of the inferential statistics. C.Inferential statistics describe the results of a study. Correct D.Inferential statistics allow drawing inferences from the sample to a target population. Answer Key: D Question 2 of 20 2.0 Points _____ are characteristics of samples, while _____ are characteristics of populations. A.Concepts; statistics B.Parameteres; statistics Correct C.Statistics; parameters D.Parameters; estimations Answer Key: C Question 3 of 20 2.0 Points In a normal distribution, what percentage of scores falls between one standard deviation below the mean and one standard deviation above the mean? A.16% B.50% Correct C.68% D.90% Answer Key: C Question 4 of 20 2.0 Points Here is a set of scores: 5, 3, 7, 3, 6, 2, 5, 3. The median of this set of scores is ______. A.2 B.3 Correct C.4 D.4.5 Answer Key: C Question 5 of 20 2.0 Points Here is a set of scores: 5, 3, 7, 3, 6, 2, 5, 3. Those mode of this set of scores is _____. A.3 B.4 Incorrect C.4.22 D.4.5 Answer Key: A Question 6 of 20 2.0 Points An exam was given to two sections of the same course. In Section 1, the exam mean was 51 and the standard deviation was 7. In Section 2, the exam mean was 51 and the standard deviation was 13. Which of the following conclusions is accurate? A.Section 1 did better on the exam than Section 2. B.Section 1 scores were more variable than Section 2. Correct C.Section 1 scores were less variable than Section 2. D.Section 1 did less well on the exam than Section 2. Answer Key: C Question 7 of 20 2.0 Points The z score, or standard score, allows the researcher to determine: Correct A.how far a target individual's score is from the group mean. B.what percentage of individuals in the sample scored above the target individual. C.the mean for the population based on the mean for the sample. D.what percentage of individuals in the sample scored below the target individual Answer Key: A Question 8 of 20 2.0 Points Danzell is a purchasing agent for a major grocery store chain. He has noticed over the years that the higher the outdoor temperature, the more likely people are to buy fresh fruit. Based on Danzell's observations, we would say there is ____________ relationship between outdoor temperature and buying of fresh fruit. Correct A.a positive B.a negative C.a causal D.no Answer Key: A Question 9 of 20 2.0 Points Frank Fitness found a correlation coefficient of -.74 between hours of strenuous exercise each week and a standard measure of body mass. He interprets this to mean that there is a ______ and ______ relationship between hours of strenuous exercise and body mass. A.strong; positive Correct B.strong; negative C.weak; positive D.weak; negative Answer Key: B Question 10 of 20 2.0 Points Statistical hypothesis testing involves the: A.research hypothesis. B.probability level. C.significance level. Correct D.null hypothesis. Answer Key: D Question 11 of 20 2.0 Points A placebo is given to the___________: A.experimental group B.treatment group Correct C.control group D.both groups