Refer to the 2010 CSI Computer Crime and Security Survey, Exercise 2.13. Recall that the percentage of monetary losses attributable to malicious actions by individuals within the organization (i.e., malicious insider actions) was recorded for 144 firms. The histogram for the data is reproduced here. A researcher wants to analyze the data using a statistical method that is valid only if the data is normally distributed. Should the researcher apply this method to the data?

Data from Exercise 2.13

Recall that 351 organizations responded to the survey on unauthorized use of computer systems. One of the survey questions asked respondents to indicate the percentage of monetary losses attributable to malicious actions by individuals within the organization (i.e., malicious insider actions). The following histogram summarizes the data for the 144 firms who experienced some monetary loss due to malicious insider actions.

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0.4 0.35 0.3 0.25 0.2 0.15 - 0.1 0.1 - 0.05 20 40 60 80 100 Monetary Loss (%) Relative Frequency