Suppose that in a large lecture class of 800 students, 520 students (65%) attend the lecture regularly. The professor is going to take a poll of 50 randomly selected students. We will look at the percentage of these randomly selected students who attend lecture regularly. (a) The percent of students in the sample who attend lecture regularly is expected to be about ______%, and the standard error is about _______%. Show all your work below, including the box model. (b) A sample of size 50 seems small. Would it be ok to use the normal approximation to find the chance that the percentage of the 50 students who attend lecture regularly is in a specific interval, such as between 70% and 80%? YES or NO (circle one) and justify your answe
Suppose that in a large lecture class of 800 students, 520 students (65%) attend the lecture regularly. The professor is going to take a poll of 50 randomly selected students. We will look at the percentage of these randomly selected students who attend lecture regularly.
(a) The percent of students in the sample who attend lecture regularly is expected to be about ______%, and the standard error is about _______%. Show all your work below, including the box model.
(b) A sample of size 50 seems small. Would it be ok to use the normal approximation to find the chance that the percentage of the 50 students who attend lecture regularly is in a specific interval, such as between 70% and 80%?
YES or NO (circle one) and justify your answer
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