Finding 68% confidence interval using proportion testing.
In a large class, the professor has each person toss a coin several times and calculate the proportion of his or her tosses that were heads. The students then report their results, and the professor plots a histogram of these several proportions. Use the 68-95-99.7 Rule to provide the appropriate response.
If the students toss the coin 200 times each, about 68% should have proportions between what two numbers?
a. 0.035 and 0.07
b. 0.465 and 0.535
c. 0.16 and 0.84
d. 0.4975 and 0.5025