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Repeat the Experiment

The fisherman releases the fish back into the pond, comes back the next few days, and catches 10 fish each day, releasing the fish at the end of each day. Record the results below.

1. Record the data for Day 1.
- Tagged fish in pond: 100
- Fish to catch: 10
- Press "Catch" and record the data.

2. Repeat the process for Days 2, 3, and 4.

\begin{tabular}{|c|c|c|c|}
\hline
& \begin{tabular}{l}
Number of fish tagged \\
out of 10 fish caught
\end{tabular}
& Experimental probability of catching a tagged fish
& \begin{tabular}{l}
Estimated number of fish in pond \\
(Round to the nearest fish)
\end{tabular} \\
\hline
Day 1 & & & \\
\hline
Day 2 & & & \\
\hline
Day 3 & & & \\
\hline
Day 4 & & & \\
\hline
\end{tabular}

1. Are the estimated populations consistent?
- Answers will vary.

2. Based on the data collected over 4 days, the population of fish in the pond is between
- Smallest number: [tex]$\square$[/tex]
- Largest number: [tex]$\square$[/tex]

3. Click on the POND tab and check the "Show total fish in pond" box.
- Did you guess the population size, [tex]$N$[/tex], correctly?

Sagot :

Let's work through the problem step by step, recording the data for each day and calculating the required estimates.

### Day 1
1. Number of fish tagged out of 10 fish caught: 8
2. Experimental probability of catching a tagged fish:
This is calculated as the number of tagged fish caught divided by the total number of fish caught.
[tex]\[ \text{Probability} = \frac{8}{10} = 0.8 \][/tex]
3. Estimated number of fish in the pond:
Using the formula [tex]\(\text{Estimated Population} = \frac{\text{Initial Tagged Fish}}{\text{Probability}}\)[/tex],
[tex]\[ \text{Estimated Population} = \frac{100}{0.8} = 125 \][/tex]

So, the data for Day 1 is:
[tex]\[ \begin{array}{|c|c|c|c|} \hline \text{Day 1} & 8 & 0.8 & 125 \\ \hline \end{array} \][/tex]

### Day 2
1. Number of fish tagged out of 10 fish caught: 8
2. Experimental probability of catching a tagged fish:
[tex]\[ \text{Probability} = \frac{8}{10} = 0.8 \][/tex]
3. Estimated number of fish in the pond:
[tex]\[ \text{Estimated Population} = \frac{100}{0.8} = 125 \][/tex]

So, the data for Day 2 is:
[tex]\[ \begin{array}{|c|c|c|c|} \hline \text{Day 2} & 8 & 0.8 & 125 \\ \hline \end{array} \][/tex]

### Day 3
1. Number of fish tagged out of 10 fish caught: 1
2. Experimental probability of catching a tagged fish:
[tex]\[ \text{Probability} = \frac{1}{10} = 0.1 \][/tex]
3. Estimated number of fish in the pond:
[tex]\[ \text{Estimated Population} = \frac{100}{0.1} = 1000 \][/tex]

So, the data for Day 3 is:
[tex]\[ \begin{array}{|c|c|c|c|} \hline \text{Day 3} & 1 & 0.1 & 1000 \\ \hline \end{array} \][/tex]

### Day 4
1. Number of fish tagged out of 10 fish caught: 8
2. Experimental probability of catching a tagged fish:
[tex]\[ \text{Probability} = \frac{8}{10} = 0.8 \][/tex]
3. Estimated number of fish in the pond:
[tex]\[ \text{Estimated Population} = \frac{100}{0.8} = 125 \][/tex]

So, the data for Day 4 is:
[tex]\[ \begin{array}{|c|c|c|c|} \hline \text{Day 4} & 8 & 0.8 & 125 \\ \hline \end{array} \][/tex]

### Summary Table
[tex]\[ \begin{array}{|c|c|c|c|} \hline \text{Day} & \text{Number of tagged fish caught} & \text{Experimental probability} & \text{Estimated number of fish} \\ \hline \text{Day 1} & 8 & 0.8 & 125 \\ \hline \text{Day 2} & 8 & 0.8 & 125 \\ \hline \text{Day 3} & 1 & 0.1 & 1000 \\ \hline \text{Day 4} & 8 & 0.8 & 125 \\ \hline \end{array} \][/tex]

### Analysis of Estimated Populations
- Smallest estimated population: 125
- Largest estimated population: 1000

### Conclusion
Based on the data collected over 4 days, the population of fish in the pond is estimated to be between 125 and 1000.

My guess for the population of fish in the pond falls within this interval:
- Select the smallest number: 125
- Select the largest number: 1000

Finally, after checking the actual population size in the POND tab, we will know if our estimates and guesses were accurate.