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Consider the data summary below. After five weeks, the plants growing in soil containing worms grew an average of [tex]$\square$[/tex] cm taller than plants growing without worms in the soil.

\begin{tabular}{|c|c|c|c|}
\hline & \multicolumn{3}{|c|}{Heights (cm)} \\
\hline & Week 1 & Week 3 & Week 5 \\
\hline Control Group Average & 9 & 22 & 49 \\
\hline Experimental Group Average & 8 & 26 & 55 \\
\hline \begin{tabular}{l}
Difference in Average Heights \\
(Experimental - Control)
\end{tabular} & -1 & 4 & 6 \\
\hline
\end{tabular}

Sagot :

GinnyAnsweridn
The data summary provides the average heights of plants in the control group and the experimental group at different weeks.

To find out how much taller the plants in the experimental group grew after five weeks compared to the control group, we need to look at the average heights at Week 5 for both groups.

1. Average height of the control group at Week 5: 49 cm.
2. Average height of the experimental group at Week 5: 55 cm.

To find the difference in the average heights between the experimental group and the control group at Week 5, we calculate:

[tex]\[ \text{Difference at Week 5} = \text{Average height of experimental group} - \text{Average height of control group} \][/tex]
[tex]\[ \text{Difference at Week 5} = 55 \, \text{cm} - 49 \, \text{cm} \][/tex]
[tex]\[ \text{Difference at Week 5} = 6 \, \text{cm} \][/tex]

So, after five weeks, the plants growing in soil containing worms grew an average of [tex]\(6 \, \text{cm}\)[/tex] taller than plants growing without worms in the soil.
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