Thomas wants to estimate the mean height of students attending his college. He records the heights of 25 randomly selected students attending the college. What the parameter? the heights of the randomly selected students the mean height of the randomly selected students all the students attending the college the mean height of all students attending the college the 25 randomly selected students

The parameter in this context refers to "the mean height of all students attending the college." This is the overall average height that Thomas is aiming to estimate through his sample of 25 students. By analyzing this subset, he hopes to gain insights about the entire student population's height. Sampling, like what Thomas is doing, is crucial in statistics. It's a practical way to understand a larger group without measuring everyone, which can be time-consuming and resource-intensive. Selecting the sample randomly helps to ensure that it is representative, minimizing bias and improving the reliability of his estimates regarding the mean height of all students.