9:02 .11 0K 2. 6. 8. 10. 1 sur 6 A mixture has a correct concentration of 20.00 mg,'ml_ nree gravimetric determinations yield 19.27, 19.25, and 19.29 mg. 'mi _ These results are best described as being B Precise Accurate and precise D. Not or precise Which of the following is an example of a null hypothesis? A. Motivation is related to achievement. B. Motivation is not related to achievement. C. Highly motivated people are more likely to be successful than those with low motivation. D Highly motivated people are less likely to be successful than those with low motivation. If a researcher rejects a null hypothesis, the researcher either A. is or a Type I error. B. is or a Type II error. C. is correct. or made a Type I error. D. is correct, or made a Type II error. A pharmaceutical representative is conducting a satisfaction survey, sampling from a list of 4.000 new potential clients. The list includes 1,000 Blue pill buyers, 1,000 Red pill, 1 ,OOO Yellow pill buyers, and 1,000 Green pill buyers. The analyst selects a sample Of 300 pill buyers, by randomly sampling 75 buyers Of each brand. IS this an example Of a Simple random sample ? A. Yes, because each buyer in the sample was randomly sampled. B. No, because the population consisted of purchasers of four different types of pills. C. NO, because eV 300-buyer sample did not have an equal Chance Of being chosen. D _ Yes. because Car buyers o r every brand Were equally represented in the sample _ E. Yes, because each buyer in the samp e had an equal Of be ing sam pled. The order in which individuals of a lion pride feed on a kill describes which variable type? B. E. Discrete Continuous Attribute Continuous, transformed What would you expect the correlation between daily calorie consumption and body weight to be? A. Moderate to large positive B. Small PO Sitive C. Zero o r near zero D _ Small negative E. Moderate to large negati ve What would you expect the correlation between pet lovers and DUI charges to be? A. Moderate to large positive B. Small PO Sitive C. Zero o r near zero D _ Small negative E. Moderate to large negative What is the z score for a raw score of 62 that comes from a distribution with a mean of 50 and a standard deviation of 10? Find the following in the Set Of numbers: 4.9. 12. 7.9 A. B. C. D. E. Mean Median Mode Range Variance Standard deviation Considering a standard nonnal distribution answer the following questions: A. A researcher grouped his data to include from two standard deviations (SD) below the median to one SD above the mean. Approximately what percentage Ofthe total data was selected?