:3. A box contains 10,000 flower seeds. Each seed is known to
grow either a white flower or a red flower. Four hundred seeds
are drawn at random without replacement and are sown. 121 of
them are observed to produce white flowers. A 68% confidence
interval for the percentage of white flower seeds in the box is
best given by
a. between 28% and 32%
b. between 20% and 40%
c. between 25% and 35%
d. between 0% and 75%