A laboratory technician records the life span (in months) of rats treated at birth with a fertility hormone. From the following frequency distribution, find the sample standard deviation of life span.
Life span (months)Midpoint xFrequency fProduct xf-0.5 - 2.5 8 2.5 - 5.5 19 5.5 - 8.5 25 8.5 - 11.5 29 11.5 - 14.5 19 Round your answer to the nearest integer.
A. 5 months
B. 7 months
C. 4 months
D. 8 months
E. 6 months
Answer: C
Mathematics
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7 + 
+ 
+ 
+ ...
A. 
2
B. 
C. 
D. 
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Evaluate using the order of operations.22 - 22 + (-14) ÷ 
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Compare and contrast the following types of quadrilaterals: trapezoid, parallelogram, rhombus, rectangle and square
What will be an ideal response?
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