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(1 point) Fireworks. Last summer, Survey USA published results of a survey stating that 229 of...

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Statistics

(1 point) Fireworks. Last summer, Survey USApublished results of a survey stating that 229 of 416 randomlysampled Kansas residents planned to set off fireworks on July 4th.Round all results to 4 decimal places.

1. Calculate the point estimate for the proportion of Kansasresidents that planned to set off fireworks on July 4th

2. Calculate the standard error for the point estimate youcalculated in part 1.

3. Calculate the margin of error for a 99 % confidence intervalfor the proportion of Kansas residents that planned to set offfireworks on July 4th.

4. What are the lower and upper limits for the 99 % confidenceinterval.

( ,  )

5. Use the information from Survey USA poll to determine thesample size needed to construct a 90% confidence interval with amargin of error of no more than 4.2%. For consistency, use thereported sample proportion for the planning value of p* (rounded to4 decimal places) and round your Z-value to 3 decimal places. Youranswer should be an integer.

Answer & Explanation Solved by verified expert
4.1 Ratings (537 Votes)
AnswerGiven thatn 416x 2291 Point estimate sample proportion x n 229 416 055041 1 05504 044962 p1 p n    See Answer
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