 #1
songoku
 2,130
 283
 Homework Statement:

A student was asked to find a 99% confidence interval for the proportion of students who are lefthanded using data of randomly chosen 80 students. Which of the following is the correct interpretation of interval 0.20 < p < 0.40? You may choose more than one option
a) With 99% confidence, the proportion of all students who are lefthanded is between 0.20 and 0.40
b) There is a 99% chance that the proportion of the population is between 0.20 and 0.40
c) There is a 99% chance that the proportion of lefthanded students in a sample of 80 students will be between 0.20 and 0.40
d) The proportion of all students who are lefthanded is between 0.20 and 0.40, 99% of the time
e) With 99% confidence, a randomly selected student who are lefthanded in the proportion of their classes that is between 0.20 and 0.40
 Relevant Equations:
 None
I think (e) is wrong because the proportion should be out of the whole population, not only in a certain class and option (a) to (d) looks like identical to me so I answered (a), (b), (c) and (d) but my answer is wrong.
Where is my mistake? Thanks
Where is my mistake? Thanks