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Stefan wants to know how many students in his school enjoy watching movies on TV. He asks this questions to all 22 students in his math class and finds that 65% of his classmates enjoy watching movies on TV. He claims that 65% of the school's student population would be expected to enjoy watching movies on TV. Is Stefan making a valid inference about his population??

a.Yes, it is a valid inference because he asked all 22 students in his math class

b. Yes, it is a valid inference because his classmates make up a random sample of the students in the school

c.No, it is not a valid inference because he asked all 22 students in his math class instead of taking a sample from his history class

d.No, it is not a valid inference because his classmates do not make up a random sample of the students in the school.

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The answer is
d. No, it is not a valid inference because his classmates do not make up a random sample of the students in the school

He should have asked a number of students from difference classes to make the data a good representative of the school's population.

The correct answer is d) No, it is not a valid inference because his classmates do not make up a random sample of the students in the school

He should have asked a number of students from different classes to make the data a good representative of the school's population.

How do we give inference conclusions on the population from the sample?

The process of using sample statistics to make conclusions about population parameters is known as inferential statistics. In other words, data from a sample are used to make an inference about a population.

Learn more about inference about  population here: https://brainly.com/question/13752289

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