Statistics for a diverse society 7th edition chapter 6 question 6 The following

Question

Statistics for a diverse society 7th edition chapter 6 question 6 The following table displays unemployment information for each region of the united states in March 2013. The unemployment rate numbers listed in the table are in the thousands. For example, the Midwest was the home to 2,525,600 unemployed residents when data were collected. Midwest 2,525.6 West 3004.6 Northeast 2,240.2 and South 4106.9. a. What are the mean and standard deviation unemployments for all regions? b. Using information from (a), how many regions fall more than 1 standard above the mean? How does this number compare with the number expected from the theoretical curve distribution? c. Create a histogram representing the unemployment figures for all regions. Does the distribution appear to be normal. Explain your answer.

Explanation / Answer

. What are the mean and standard deviation unemployments for all regions?

mean of midwest = 2525.6

SD of midwest = srqt(0.001*(1-0.001)*2525600) = 50.23

mean of west = 3004.6

SD of midwest = srqt [0.0012*(1-0.0012)*2525600 ] = 55.02

mean of northeast = 2240.2

SD of northeast 0 srqt ( 0.00089*(1-0.00089)*2525600) = 47.39

mean of south = 4106.9

SD of south = srqt ( 0.0016*(1-0.0016)*2525600) = 63.52

for the other questions please post it in a new question

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