Please see attached file for math questions.Company A
180000
160000
140000
120000
100000
80000
60000
40000
20000
0
1st quarter
January-March
($120,000)
2nd quarter April- 3rd quarter July4th quarter
June ($150,000)
September
October-December
($170,000)
($70,000)
Series 1
Blank
Blank2
Use the bar graph to the right to determine the percent of increase in sales from the first to the second
quarter.
The 7th Inning wants to group a collection of autographed photos by price ranges. The table with the
prices is shown on the right. What percent of the collection is priced below $20?
4.66
28.97
3.33
3.73
38.51
4.95
17.55
2.59
3.37
29.23
3.17
12.09
8.27
14.46
15.02
26.94
30.42
3.18
24.06
17.68
41.99
30.48
17.34
18.93
7.27
18.52
41.66
14.52
46.18
27.87
Find the deviations from the mean for the set of data:
25
31
18
23
23
In a set of 24 months of data for medical leave that has a mean of 9 days per month and a
standard deviation of 3.69, how many months are expected to have fewer than 12.69 days per
month reported medical leave (one standard deviation above the mean)?
Approximately
months should have 12.69 or fewer days reported medical leave.
In a set of 100 ACT scores, where the mean is 24 and the standard deviation is 6.08,
(a) how many scores are expected to be lower than 17.92 (one standard deviation below the
mean)?
(b) How many of the 100 scores are expected to be below 36.16 (two standard deviations above
the mean)?
Salaries for the research and development department are given as $48,345; $27,617; $ 42,565 ;
$19,522; $32,450; and $37,598.
Find the mean, the median, and the mode of the salaries.
If the employee’s salary increases from $40,000 in 2005 to $43,000 in 2006 what is the percent
of the increase?

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