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6. Weights of statistics students were obtained by a teacher as part ofan experiment conducted for the class. The last digit of those weights are

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6. Weights of statistics students were obtained by a teacher as part ofan experiment conducted for the class. The last digit of those weights are listed below. Construct a frequency distribution with 10 classes. Based on the distribution, do the weights appear to be reported or actually measured? What can be said about the accuracy of the results? [1000000011223344555555555558899 Complete the frequency disth'bution below. Last digit Frequency Last digit Frequency n s : 1 e j 2 r : a a Z a s : (Type integers or decimals} Based on the distribution. do the weights appear to be reported or actually measured? A. The weights appear to be actually measured because there are disproportionately more [is and 5s. B. The weights appear to be actually measured because the distribution is uniform. c. The weights appear to be reported because there are disproportionately more [is and 55. o. The weights appear to be reported because the dishibution is unrrorrn. What can be said about the accuracy ofthe resurts? A. They are likely accurate because they appear to be reported. B. They are likely not very accurate because they appear to be reported. 0. They are likely not very accurate becaux they appear to be actually measured. D. They are likely accurate because they appear to be actually measured. 27. Below are the jersey numbers of 11 players randomly selected from a football team. Find the range, variance, and standard deviation for the given sample data. What do the results tell us? 19 46 23 99 60 72 6 64 94 31 86 Range = (Round to one decimal place as needed.) Sample standard deviation = (Round to one decimal place as needed.) Sample variance = (Round to one decimal place as needed.) What do the results tell us? O A. Jersey numbers on a football team do not vary as much as expected. O B. The sample standard deviation is too large in comparison to the range. O C. Jersey numbers on a football team vary much more than expected. O D. Jersey numbers are nominal data that are just replacements for names, so the resulting statistics are meaningless.28. A sample of blood pressure measurements is taken for a group of adults, and those values (mm Hg) are listed below. The values are matched so that 10 subjects each have a systolic and diastolic measurement. Find the coefficient of variation for each of the two samples; then compare the variation. Systolic 117 129 160 97 157 121 116 138 126 118 Diastolic 81 78 72 50 89 86 59 65 71 82 The coefficient of variation for the systolic measurements is % (Type an integer or decimal rounded to one decimal place as needed.) The coefficient of variation for the diastolic measurements is (Type an integer or decimal rounded to one decimal place as needed.) Compare the variation. The coefficients of variation for each data set are (1) Therefore, the systolic measurements vary (2) the diastolic measurements. (1) O more than 5 percentage points apart. (2) O significantly less than O within 5 percentage points of each other. O significantly more than O about the same as29. The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 262.5 and a standard deviation of67.1. (All units are 1000 cells/uL.) Using the empirical rule, find each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 1 standard deviation of the mean, or between 195.4 and 329.6? b. What is the approximate percentage of women with platelet counts between 128.3 and 396.7? a. Approximately of women in this group have platelet counts within 1 standard deviation of the mean, or between 195.4 and 329.6. (Type an integer or a decimal. Do not round.) b. Approximately of women in this group have platelet counts between 128.3 and 396.7. (Type an integer or a decimal. Do not round.)

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