Ch.10 Stats Practice Exam Questions 2024.

Ch.10 Stats Practice Exam Questions 2024. Which of the following would represent independent measures? - CORRECT ANSWER The average number of traffic tickets among men and women is measured to see if there is a statistically significant difference. Measuring whether age has an effect on the amount of time an individual can hold his breath under water. A sample of 10-year-olds is compared with a sample of 18-year-olds. An independent-measures design is also known as a _______________ design. - CORRECT ANSWER between-subjects design A research study measures the effect of age on the average driving speed by selecting a sample of teenage drivers and a sample of drivers between the ages of 20 and 25. Why is this an example of an independent-measures design? - CORRECT ANSWER There is one measure being taken for two non-overlapping samples. How is an independent-measures design different from a study that makes inferences about the population mean from a sample mean? - CORRECT ANSWER In an independent-measures design, there are two independent samples that are compared to one another In an independent measures test, a researcher is looking at the average height of Americans versus the average height of Australians. If μ1 and μ2 are the two population mean heights, what is the null hypothesis? - CORRECT ANSWER b. H0: μ1 − μ2 = 0 Two samples are taken from separate populations. The sample and population mean from one group are M1 = 16 and μ1 = 14. The sample and population mean from the second groups are M2 = 21 and μ2 = 13. If the estimated standard error is S(M1 - M2) = 2, what is the t statistic? - CORRECT ANSWER -3 A sample of size n1 = 16 is taken from a group of bees in one hive, and the sample variance in weight is 1.2 grams. A sample of size n2 = 16 is taken from another hive, and the sample variance is 0.8 grams.