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  3. 1. complete the problems below. a. find the critic

1. Complete the problems below. a. Find the critical value z a/2 that corresponds to 93% confidence...

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Question

Statistics

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)

Answer & Explanation Solved by verified expert
4.1 Ratings (606 Votes)
a The 2 tailed critical value for 100 93 100 7 007 is 1810072 0035 and 1 0035 0965 using this p value fromthe standard normal    See Answer
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