Myrna wants to know about how many pairs of jeans middle school students own. She did not have time to ask all 257 middle school students, so she surveyed a random sample of 25 students. The given results display the number of pairs of jeans each surveyed student owns. 3 comma 4 comma 2 comma 1 comma 3 comma 1 comma 2 comma 4 comma 2 comma 3 comma 1 comma 2 comma 4 comma 2 comma 3 comma 2 comma 2 comma 6 comma 1 comma 1 comma 2 comma 4 comma 1 comma 1 comma 2 The mean of her data is 2 point 3 6 pairs of jeans. From the given data and the calculated mean, which inference could Myrna make?
Answer
A
Most seventh-grade students prefer cargo pants to jeans.
B
The average middle school student owns around two pairs of jeans.
C
All middle school students own jeans.
D
An average middle school student owns three or more jeans.
Explanation
Myrna surveyed a random sample of 25 middle school students, and their mean was 2.36 pairs of jeans. This supports the inference that the average middle school student owns around two pairs. The sample does not show that every student owns jeans, and it gives no information about students’ clothing preferences.
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