A box contains 5000 tickets. There are 500 cards with value of 1 and 4500 cards with value of 0. We take 90 random draws with replacement from the box. (a) The average of the ticket values in the box is __________ and the SD is __________. he expected value of the percentage of
A box contains 5000 tickets. There are 500 cards with value of 1 and 4500 cards
with value of 0. We take 90 random draws with replacement from the box.
(a) The average of the ticket values in the box is __________ and the SD is
__________.
he expected value of the percentage of 1’s among the 90 cards randomly
drawn is __________%, and the standard error is __________%.
(C) A sample of size 90 seems small. Using the relevant rule of thumb for CLT in 0-1
boxes discussed in lecture, is it ok to use the normal approximation to find the
chance that the percentage of 1’s among the 90 cards is in a specific interval, such
as between 70% and 80%?
YES or NO (circle one) and justify your answer:
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