SOLUTION: I need help with these problems:
Problem #1
The number of unemployed workers in the United States in recent years (in millions) is given below,
Year & # of unemployed
1992
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-> SOLUTION: I need help with these problems:
Problem #1
The number of unemployed workers in the United States in recent years (in millions) is given below,
Year & # of unemployed
1992
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Question 87990: I need help with these problems:
Problem #1
The number of unemployed workers in the United States in recent years (in millions) is given below,
Year & # of unemployed
1992 / 9.61
1993 / 8.94
1994/ 8.00
1995 / 7.40
1996/ 7.24
1997/ 6.74
1998 / 6.21
1999/ 5.88
2000/ 5.66
2001/ 6.74
a. Find the mean number unemployed (in millions) in this
period. Which year has unemployment closest to the
mean?
b. Find the standard deviation for the data.
c. In how many of these years is unemployment within
1 standard deviation of the mean?
d. In how many of these years is unemployment within
3 standard deviations of the mean?
You can put this solution on YOUR website! Problem #1
The number of unemployed workers in the United States in recent years (in millions) is given below,
Year & # of unemployed
1992 / 9.61
1993 / 8.94
1994/ 8.00
1995 / 7.40
1996/ 7.24
1997/ 6.74
1998 / 6.21
1999/ 5.88
2000/ 5.66
2001/ 6.74
a. Find the mean number unemployed (in millions) in this
period.
Anwer: Add the numbers and devide by 10 to get x-bar = 7.242
Which year has unemployment closest to the
mean? 1996
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b. Find the standard deviation for the data.
1.2917
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c. In how many of these years is unemployment within
1 standard deviation of the mean?
I'll let you figure this and the next.
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d. In how many of these years is unemployment within
3 standard deviations of the mean?
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Cheers,
Stan H.
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