From a random sample of 300 students at a state university, you find the average number of hours of study time each week is 30 with a standard deviation of 5. In this research situation,
A) the sample is too small
B) the population consists of the 300 students surveyed
C) the sample is the 300 students surveyed
D) the parameter is 30

Question

Quizplus · Accepted Answer

The sample size of 300 is considered large enough for central limit theorem to be applied, which means that the sample represents the population. The population in this case refers to all students at the state university. The parameter is the true average number of hours of study time for all students at the university, which is unknown and is estimated by the sample mean of 30 hours.

From a Random Sample of 300 Students at a State