3. If President Obama\'s net worth is $3,670,505, and the 17 members of the Exec

Question

3. If President Obama's net worth is $3,670,505, and the 17 members of the Executive Branch have a mean net worth of S4,939,455 with a standard deviation of $7,775,948(based on the data from opensecrets.org). If we consider "usual" amounts of net worth to be those that convert to z scores between -2 and 2, is President Obama's net worth usual or unusual? 4. The following are amounts of time (minutes) spent on hygiene and grooming in the morning by survey respondents (based on data from an SCA survey). 15, 16, 18, 25, 26, 30, 32, 41, 45, 55, 63. Does the number 63 appear unusually large?

Explanation / Answer

3. Here mean=4939455 and sd=7775948

Hence z=(3670505-4939455)/7775948=-0.16

So it is not unusual

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