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.
$$\begin{array} { | l | l | l | l | }
\hline \text { Life span (months) } & \text { Midpoint } x & \text { Frequency } f & \text { Product } x f \
\hline -0.5 - 2.5 & & 11 & \
\hline 2.5 - 5.5 & & 20 & \
\hline 5.5 - 8.5 & & 21 & \
\hline 8.5 - 11.5 & & 29 & \
\hline 11.5 - 14.5 & & 19 & \
\hline
\end{array}$$ Please round your answer to the nearest whole number, if necessary.
__________ 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.
  $$\begin{array} { | l | l | l | l | } 
\hline \text { Life span (months) } & \text { Midpoint } x & \text { Frequency } f & \text { Product } x f \
\hline -0.5 - 2.5 & & 11 & \
\hline 2.5 - 5.5 & & 20 & \
\hline 5.5 - 8.5 & & 21 & \
\hline 8.5 - 11.5 & & 29 & \
\hline 11.5 - 14.5 & & 19 & \
\hline
\end{array}$$ Please round your answer to the nearest whole number, if necessary.
__________ 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.
  $$\begin{array} { | l | l | l | l | } 
\hline \text { Life span (months) } & \text { Midpoint } x & \text { Frequency } f & \text { Product } x f \
\hline -0.5 - 2.5 & & 11 & \
\hline 2.5 - 5.5 & & 20 & \
\hline 5.5 - 8.5 & & 21 & \
\hline 8.5 - 11.5 & & 29 & \
\hline 11.5 - 14.5 & & 19 & \
\hline
\end{array}$$ Please round your answer to the nearest whole number, if necessary.
__________ months

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