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1. Recall the empirical Rule. 2. One study, published in 1972 by R. I

1. Recall the empirical Rule. 2. One study, published in 1972 by R. I

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Exercise 4: (Empirical rule) 1. Recall the empirical Rule. 2. One study, published in 1972 by R. Risebrough, (Proceedings of the 6th Berkeley Symposium on Mathematics and Statistics, VI, University of California Press, pp. 443–463). In that study, 60 Anacapa pelican eggs were collected and measured for their shell thickness, in millimeters (mm), and concentration of PCBS, in parts per million (ppm). The PCB concentrations are presented in the following table: 139 166 175 260 204 138 316 396 46 218 173 220 147 216 216 177 246 296 188 89 198 122 250 256 261 132 212 171 164 199 214 177 205 208 320 191 305 230 204 143 175 119 216 185 236 356 289 324 109 265 193 203 214 150 229 236 144 232 87 237 a. Draw the relative frequency histogram using R. b. Is it reasonable to apply the Empirical rule to estimate the percentages of observations that lie within one, two, and three standard deviations to either side of the mean? c. Use the empirical rule to estimate the percentages of observations that lie within one, two, and three standard deviations to either side of the mean. d. Use the data to obtain the exact percentages of observations that lie within one, two, and three standard deviations to either side of the mean. e. Compare your answers in parts (b) and (c).
Transcribed Image Text:Exercise 4: (Empirical rule) 1. Recall the empirical Rule. 2. One study, published in 1972 by R. Risebrough, (Proceedings of the 6th Berkeley Symposium on Mathematics and Statistics, VI, University of California Press, pp. 443–463). In that study, 60 Anacapa pelican eggs were collected and measured for their shell thickness, in millimeters (mm), and concentration of PCBS, in parts per million (ppm). The PCB concentrations are presented in the following table: 139 166 175 260 204 138 316 396 46 218 173 220 147 216 216 177 246 296 188 89 198 122 250 256 261 132 212 171 164 199 214 177 205 208 320 191 305 230 204 143 175 119 216 185 236 356 289 324 109 265 193 203 214 150 229 236 144 232 87 237 a. Draw the relative frequency histogram using R. b. Is it reasonable to apply the Empirical rule to estimate the percentages of observations that lie within one, two, and three standard deviations to either side of the mean? c. Use the empirical rule to estimate the percentages of observations that lie within one, two, and three standard deviations to either side of the mean. d. Use the data to obtain the exact percentages of observations that lie within one, two, and three standard deviations to either side of the mean. e. Compare your answers in parts (b) and (c).
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