HW 2 Data Analytics.docx - Bus 322 Bus 322 Homework Assignment 2 7 Problems to work Chapter 6 15 19 34 41 15 The population mean rating for Miami was

# HW 2 Data Analytics.docx - Bus 322 Bus 322 Homework...

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Bus 322 Bus 322 Homework Assignment 2 7. Problems to work: Chapter 6 : 15, 19, 34, 41. 15. The population mean rating for Miami was 6.34. Rating Mean 6.34 Standard Error 0.305874457 Median 6.5 Mode 8 Standard Deviation 2.16285903 Sample Variance 4.677959184 Kurtosis -1.180629819 Skewness -0.144492246 Range 8 Minimum 2 Maximum 10 Sum 317 Count 50 Confidence Level(95.0%) 0.614677735 19. Will today's children be better off than their parents? Mean 0.24 Standard Error 0.01351231 Median 0 Mode 0 Standard Deviation 0.42729683 Sample Variance 0.18258258 Kurtosis -0.5141168 Skewness 1.2193914 Range 1 Minimum 0 Maximum 1 Sum 240 Count 1000 Confidence Level(95.0%) 0.02651577 19a. The point estimate of the proportion of the population of adults who do think that today’s children will be better off than their parents is 24%.

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19b. The margin of error is .0135. 19c. The 95% confidence interval for the proportion of adults who think that today’s children will be better off than their parents is UL: .2665 and LL: .2135 19d. The 95% confidence interval for the proportion of adults who do not think that today’s children will be better off than their parents is UL: .7864 and LL: .7335 19e. The YES group has the smaller margin of error due to it having a smaller sample size.

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