Question

Carlin wants to determine the general attitude toward math of the students in the school. Which of the following methods will produce a random sample? A) survey 10 students from each of Mr. Lee’s math class. B) Survey all of the students in Carlin’s 1st period class. C) survey every 15th student who enters the cafeteria at lunchtime. D) survey every 3rd student in the list of honors students.

Answer 1

C.) survey every 15th student who enters the cafeteria at lunchtime.

Answer 2

Answer:

C) survey every 15th student who enters the cafeteria at lunchtime.

Step-by-step explanation:

The sample is a subset of the population. We take samples because it is easy to analyze samples as compared to population and it is less time taken.

The sample is said to be a random sample if the sample is taken randomly or each unit is selected without any bias.

Option (A) is not a random sample as units are selected from Mr. Lee’s math class which is bias selection.

Option (B) is incorrect as Carlin take a survey of all students of 1st period and it might be possible that they are math's student.

Option (c) is a random sample as Cafeteria has every type of student.

Option (D) is also incorrect as the sample is biased.