Project topic and feasibility Project Summary & Findings The previous studies have shown that urban bus drivers have an extremely stressful job, and a large proportion of drivers retire prematurely with disabilities due to occupational stress. These stresses come from a combination of physical and social sources such as traffic congestion, incessant time pressure, and unruly passengers. In the paper, \"Hassles on the Job: A Study of a Job Intervention with Urban Bus Drivers\" (Journal of Organizational Behavior, Vol. 20, pp. 199 - 208), G. Evans et al. examined the effects of an intervention program to improve the conditions of urban bus drivers. Among other variables, the researchers monitored diastolic blood pressure of bus drivers in downtown Stockholm, Sweden. The data, in millimeters of mercury (mm Hg), are based on the blood pressures obtained prior to intervention for the 41 bus drivers in Sweden for the study Part (A- Include all Software Output Exploratory Data Analysis a) Summarize the data using a... i. Stem and leaf diagram ii. Histogram with approximately 7 classes. Histogram 14 12 10 8 6 4 Freuencie s 2 0 Class Limit s iii. Box and whiskers plot. b) Summarize the data set using a table of descriptive statistics. The table must be generated by a statistical software and include the following statistics: Part (B- include all Software Output Inferential Statistics c) Use a STATISTICAL SOFTWARE to construct a 90% confidence interval for , the population mean diastolic blood pressure of all urban bus drivers in Stockholm . i. (79.041,84.471) d) In adults the ideal diastolic blood pressure is 80 mm Hg. At the 5% significance level, do the data provide sufficient evidence to conclude that the mean diastolic blood pressure of bus drivers in Stockholm exceeds the normal diastolic blood pressure of 80 mm Hg? i. Ho: u= 80 Ho: u>80 Alpha = .05 T=1.089 P = .1413 No, fail to reject because it have no evidence to see bus driver pressure > 80. Understand the purpose and Value of the study There are everyday reasons why statistic is are important, they are sets of mathematical equations that are used to analysis what is happening in the world all around us. We can use this much of information was determining the data by using the statistics. I learned that the statistic can tells us any ways in what happened in the past and it can be also useful in predicting what may happen. There are many ways that we use the graph to show our data that is depends on variety of factors which are time plots, scatterplots, Bar graphs, and box and whisker graph