Question

lorena took a survey of the students in her honors science class to determine how many are going to college. she found that 85% of the students plan to go to college. can lorena make the inference that 85% of all the seniors at her school are going to college? check all that apply. no, lorenas sample was not a random sample of the entire school. no, to make a valid inference, lorena would have to survey every senior. no, lorenas sample was biased because it was taken only from an honors class. yes, lorenas sample was unbiased. yes, lorenas inference would be correct.

Explanation:

For a valid inference about all seniors in the school, the sample should be random and representative. Lorena's sample is from an honors science class, which is not a random sample of all seniors and is likely to be a biased sample as honors - class students may have different college - going rates than the general senior population. Surveying every senior is not always necessary for a valid inference, but a proper random sample is.

Answer:

No, Lorena's sample was not a random sample of the entire school.
No, Lorena's sample was biased because it was taken only from an honors class.