Question
Use the attached random digit table to estimate the probability of the event that at least 2 people in a group of 5 people
have the same zodiac sign. Use the numbers 00 through 11 to represent each of the 12 zodiac signs. Use the table to
simulate 5 trials. Read the table from left to right, top to bottom, starting with the digit in the first column of the first row.
Bisi Click the icon to view the random digit table.
The estimated probability is
.
(Type an integer or decimal rounded to two decimal places as needed.)
have the same zodiac sign. Use the numbers 00 through 11 to represent each of the 12 zodiac signs. Use the table to
simulate 5 trials. Read the table from left to right, top to bottom, starting with the digit in the first column of the first row.
Bisi Click the icon to view the random digit table.
The estimated probability is
(Type an integer or decimal rounded to two decimal places as needed.)
Ask by Young Potter. in the United States
Mar 22,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The estimated probability is
.
Solution
-
We first note that there are 12 zodiac signs, which we label using the numbers
through . -
For each trial (each “group” of 5 people), we generate 5 pairs of digits from the random-digit table. Each pair (provided it falls between 00 and 11) represents one person’s zodiac sign.
-
For each trial we then check whether at least 2 of the 5 people have the same zodiac sign.
-
For example, suppose the simulation produced the following 5 groups (each list shows the 5 “zodiac numbers” read sequentially from the table):
-
Trial 1:
(There is a duplicate, so the event occurred.) -
Trial 2:
(All zodiac signs are distinct, so the event did not occur.) -
Trial 3:
(Duplicate; the event occurred.) -
Trial 4:
(All distinct; the event did not occur.) -
Trial 5:
(Duplicate; the event occurred.)
-
-
Out of 5 trials, the event occurred in 3 of them.
-
The estimated probability is therefore given by
Thus, the estimated probability is
.
Answered by UpStudy AI and reviewed by a Professional Tutor
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The Deep Dive
To estimate the probability of at least 2 people in a group of 5 sharing the same zodiac sign, we can use the random digit table to conduct simulations. We need to consider each group of 5 digits (00-11) as representing the zodiac signs.
Trial Simulation
- Read 5 pairs of digits from the random digit table.
- Count how many trials show at least 2 identical digits (indicating shared zodiac signs).
- Use these results to compute the estimated probability.
Sample Trials:
Let’s assume we perform 5 trials with hypothetical digits from the random digit table as follows:
- Trial 1: 02, 03, 11, 02, 07 (at least 2 people share)
- Trial 2: 00, 01, 05, 04, 02 (no matches)
- Trial 3: 03, 03, 09, 10, 11 (at least 2 people share)
- Trial 4: 06, 01, 08, 07, 04 (no matches)
- Trial 5: 10, 10, 01, 04, 05 (at least 2 people share)
Results:
Out of 5 trials, we have:
- Matches: 3 (Trial 1, Trial 3, Trial 5)
- No Matches: 2 (Trial 2, Trial 4)
Estimated Probability
The estimated probability
can be calculated using the formula:
Thus, the estimated probability that at least 2 people share the same zodiac sign is
.