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.
$$\begin{array} { | l | l | l | l | }
\hline \text { Life span (months) } & \text { Midpoint } x & \text { Frequency } f & \text { Product } x f \
\hline -0.5 - 2.5 & & 8 & \
\hline 2.5 - 5.5 & & 19 & \
\hline 5.5 - 8.5 & & 25 & \
\hline 8.5 - 11.5 & & 29 & \
\hline 11.5 - 14.5 & & 19 & \
\hline
\end{array}$$ Round your answer to the nearest integer.
A) 5 months
B) 7 months
C) 4 months
D) 8 months
E) 6 months

Question

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.
  $$\begin{array} { | l | l | l | l | } 
\hline \text { Life span (months) } & \text { Midpoint } x & \text { Frequency } f & \text { Product } x f \
\hline -0.5 - 2.5 & & 8 & \
\hline 2.5 - 5.5 & & 19 & \
\hline 5.5 - 8.5 & & 25 & \
\hline 8.5 - 11.5 & & 29 & \
\hline 11.5 - 14.5 & & 19 & \
\hline
\end{array}$$ Round your answer to the nearest integer.
A) 5 months
B) 7 months
C) 4 months
D) 8 months
E) 6 months

Quizplus · Accepted Answer

The Answer of 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.
  $$\begin{array} { | l | l | l | l | } 
\hline \text { Life span (months) } & \text { Midpoint } x & \text { Frequency } f & \text { Product } x f \
\hline -0.5 - 2.5 & & 8 & \
\hline 2.5 - 5.5 & & 19 & \
\hline 5.5 - 8.5 & & 25 & \
\hline 8.5 - 11.5 & & 29 & \
\hline 11.5 - 14.5 & & 19 & \
\hline
\end{array}$$ Round your answer to the nearest integer.
A) 5 months
B) 7 months
C) 4 months
D) 8 months
E) 6 months

A Laboratory Technician Records the Life Span (In Months) of Rats