The grades obtained by students on a psychology test are presentedbelow.16. How many students were there?A. 20B. 5C. 9D. 2517. What was the lowest score on the test?A. 5B. 25C. 50D. 5218. How many persons scored higher than 75?A. 8B. 7C. 5D. 12For questions 19 - 21Twelve students from the SVGCC were asked, “About how many hoursper week do you spend studying?” The responses were as follows:20 9 11 6 35 15 22 10 25 14 15 1219. **What is the mean?A. 18.5B. 16.2C. 15D. 14.5Stem and Leaf5 2 56 2 6 87 2 4 4 6 6 6 8 88 2 2 4 6 89 2 6

Question 16Not yet answeredMarked out of 1.00Flag questionTipsQuestion text"A class of 50 students scored an average of a 73 on the final exam. Given the standard deviation is 5, what is the value of t for a student who scored a 67?"Question 16Answera.-8.49b.-16.97c.-17.5d.-7.07Clear my choiceQuestion 17Not yet answeredMarked out of 1.00Flag questionTipsQuestion textTI=83 graphing calculators are more useful in which of the following subject functions?Question 17Answera.Statistics, trigonometry, and algebrab.Only statistics and algebrac.Only statisticsd.Only statistics and trigonometryClear my choiceQuestion 18Not yet answeredMarked out of 1.00Flag questionTipsQuestion textWhat is an outlier?Question 18Answera.an observation that may indicate that the distribution is skewed and that one should be very cautious in using tools or intuitions that assume a normal distributionb.an observation that is numerically distant from the rest of the datac.an observation that is often indicative either of measurement error or of the population having a heavy-tailed distributiond.all of these answersClear my choiceQuestion 19Not yet answeredMarked out of 1.00Flag questionTipsQuestion textWhen is the root-mean-square especially useful?Question 19Answera.when a data set includes both positive and negative numbersb.when a data set includes both discrete and continuous valuesc.when a data set includes exclusively positive numbersd.when a data set includes exclusively negative numbersClear my choiceQuestion 20Not yet answeredMarked out of 1.00Flag questionTipsQuestion textLooking at a scatter plot and seeing how close the points are to a line helps to determine what about the statistical relationship?Question 20Answera.verticalityb.strengthc.horizontalityd.direction

Time left 0:45:06Question 15Not yet answeredMarked out of 1Flag questionTipsQuestion textWhat document type explains how student responses to assessment tasks will be evaluated?Question 15Answera.Marking Schemeb.Curriculum Guidec.Student Profiled.Report Card          Clear my choiceQuestion 16Not yet answeredMarked out of 1Flag questionTipsQuestion textIf a test has a median 30 and a mode of 40, then the mean would most likely be Question 16Answera.45b.60c.35d.20Clear my choiceQuestion 17Not yet answeredMarked out of 1Flag questionTipsQuestion textThe following distribution of scores were obtained for a Social Studies quiz.                                        12      4      1      5     9       4     0    What is the median score of the distribution? Question 17Answera.7b.3c.4d.5

A student scored 75% on a test with 80 questions. How many questions did the student answer correctly?

Question 10Drs. Melnyk and Ahmed conducted a study in which 400 participants completed a 50-point test about their knowledge of statistics. The mean score was 40 with a standard deviation of 5. These results approximated a normal distribution, which means that the probability of a score between 0 and 1 standard deviations was about 34.1%, between 1 and 2 standard deviations was about 13.6%, and above 2 standard deviations was about 2.3%. If Ashley’s score on this test was 50, what percentage of students are below Ashley’s score? 1 point97.7%13.6%99.8%47.7%

Question 4Your instructor tells you that the recent exam had a mean of 80 points and a standard deviation of 2.3. Interpret the standard deviation value in everyday language.1 pointThe maximum score was 82.3.Most students earned an 80 on the exam.The typical score was 2.3 points away from the mean.The range of scores was 4.6.