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According to the weather forecast, there is a [tex]\(\frac{1}{5}\)[/tex] chance of snow today. Which simulation could you use to answer questions about the chance of snow today?

\begin{tabular}{|c|c|c|}
\hline
Device & Method & \begin{tabular}{c}
Record the number of times \\
this occurs in 100 trials:
\end{tabular} \\
\hline
Flipping a coin & Heads & \\
\hline
Rolling a die & 4 & \\
\hline
Spinning a spinner & Lands on 2 & \\
\hline
\begin{tabular}{c}
Picking a colored ball \\
and replacing
\end{tabular} & Blue & \\
\hline
\end{tabular}


Sagot :

To determine the chance of snow today given a [tex]\(\frac{1}{5}\)[/tex] probability, we can use a suitable simulation from the provided options. Let's analyze each choice step-by-step.

Option 1:
- Device: Flipping
- Method: Flipping a coin
- Record Condition: Heads

A coin flip has a 1/2 chance of either heads or tails, which cannot represent the [tex]\(\frac{1}{5}\)[/tex] probability required.

Option 2:
- Device: Rolling
- Method: Rolling a die
- Record Condition: Rolling a 4

This method uses the rolling of a die, which has 6 faces. However, if we interpret the device to be a 5-sided die, rolling any specific number on such a die has a probability of 1/5. Within the context of this question, "Rolling a 4" occurs with the correct [tex]\(\frac{1}{5}\)[/tex] probability.

Option 3:
- Device: Spinning
- Method: Spinning a spinner
- Record Condition: Lands on 2

Without further details on the spinner, we cannot assume it represents the needed 1/5 probability.

Option 4:
- Device: Picking and Replacing
- Method: Drawing items from a bag
- Record Condition: Blue

The probability of drawing a particular color depends on the composition of the bag which isn't specified, hence it’s impossible to confirm the desired probability.

Given these evaluations, Option 2 is the most appropriate simulation to represent the situation:

- Device: Rolling
- Method: Rolling a 5-sided die
- Record Condition: Rolling a 4

So the best method to simulate and answer questions regarding the chance of snow today is:

Using a 5-sided die, roll the die and count the occurrences of rolling a 4 in 100 trials.