One year ago, JK Mfg. deposited $12,000 in an investment account for the purpose of buying new equipment four years from today.
1 answer:
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Answer:
$24.7million
$97.86million
$9.89million
Explanation:
From the sample , the lowest number is 16.3 and the highest number is 41, the range is
41-16.3
=$24.7 million
Σ
In the sample given the mean is . : (41 +40 +38+ 32+ 23+ 22+ 20+ 18+ 17.8 +16.3 )/10
mean=26.81
Using that, we can find the variance:
[(41-26.81)^2+(40-26.81)^2+(38-26.81)^2+(32-26.81)^2+(23-26.81)^2+(22-26.81)^2+(20-26.81)^2+(18-26.81)^2+(17.8-26.81)^2+(16.3-26.81)^2]/10=97.86million
The standard deviation is just the square root of the variance:
standard deviation=√(var)
, the standard deviation is the square root of 97.86, which equals $ 9.89 million