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[answered] 1) Use the sample data and confidence level given below to


1)

Use the sample data and confidence level given below to complete parts (a) through (d).


A research institute poll asked respondents if they acted to annoy a bad driver. In the poll, n equals 2423,n=2423, and x=908 who said that they honked. Use a 99% confidence level.


Use z-score table.

a) Find the best point estimate of the population proportion p.


?___


(Round to three decimal places as needed.)


b) Identify the value of the margin of error E.


E=__


(Round to three decimal places as needed.)


c) Construct the confidence interval.


? ? ? ? ? ? __< p <__


(Round to three decimal places as needed.)


d) Write a statement that correctly interprets the confidence interval. Chose the correct answer below.


a.? There is a 99% chance that the true value of the population proportion will fall between the lower bound and the upper bound.

b.? One has 99% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion.

c.? One has 99% confidence that the sample proportion is equal to the population proportion.

d.? 99% of sample proportions will fall between the lower bound and the upper bound.



2)


Use the given information to find the P-value. Also, use a 0.05 significance level and state the conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null hypothesis).?


With

 


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