1.) If n=180 andp(p-hat) = 0.4, construct a 98% Confidence Interval.

In order to use technology, you need to compute the number of successes: x = n*p^

Give your answers to three decimal places. Answer as _______

2.)Assume that a sample is used to estimate a population proportionp. Find the 90% confidence interval for a sample of size 281 with 39.1% successes. Enter your answer ininterval notationusing decimals (not percents) accurate to three decimal places. Answer as (_______,________)

3.) Out of 300 people sampled, 162 preferred Candidate A. Based on this, estimate what proportion of the voting population (p) prefers Candidate A. Use a 95% confidence level, and give your answers as decimals, to three places. Use trinomial inequality format: Answer as ________

4.)If n=15,x(x-bar)=48, and s=17, construct a confidence interval at a 90% confidence level. Enter the interval in trinomial inequality form. Give your answers to one decimal place. Answer as ________< <_________