1. Complete the problems below.
a. Find the critical value z a/2 that corresponds to 93%confidence level.
Z a/2 = _____
Q1 (ROUND TO 2 DECIMAL PLACES)
b.You plan to conduct a survey to estimate the percentage ofpeople who eat breakfast. Find the number of people who must besurveyed if you want to be 93% confident that the sample percentageis within two percentage points of the true populationpercentage.
(USE YOUR ANSWER FROM PROBLEM #1a for critical values)
Assume that nothing is known about the percentage to beestimated. n=__________Q2
Assume that studies have shown that 34% of the people eatbreakfast. n=___________Q3
c.
In a survey of 1002 people, 701 said they voted in a recentpresidential election. Construct a 95% confidence interval for theproportion of people who said they voted in a recent presidentialelection.
(ROUND TO 3 DECIMAL PLACES)
Confidence Interval ( ___________________Q4 ,___________________Q5)
