1) The three confidence intervals below were constructed from the same sample. One of them was computed at a confidence level of 90%, another at a confidence level of 95%, and another at a confidence level of 98%. Which is the 98% confidence level?

Select one:

a.cannot be determined

b. 37.6 << 48.4

c. 38.4 << 47.6

d. 36.5 << 49.5

2) In a survey of 221 registered voters, 102 of them wished to see the governor re-elected. With 99% confidence, estimate the proportion of registered voter who want to see the governor re-elected.