Answer
a. 236
b. 0.402 < p < 0.516
c. 0.431 < p < 0.487
d. The 95% confidence interval is
wider than the 80% confidence
interval. A 95% confidence interval
must be wider than an 80% confidence
interval in order to be more
confident that it captures the true
value of the population proportion.
Work Step by Step
a. 236
b. 0.402 < p < 0.516
c. 0.431 < p < 0.487
d. The 95% confidence interval is
wider than the 80% confidence
interval. A 95% confidence interval
must be wider than an 80% confidence
interval in order to be more
confident that it captures the true
value of the population proportion.