**Estimating Sample Size for Ear-Wiggling Ability**To determine the sample size necessary for estimating the percentage of adults who can wiggle their ears, consider the following:Use a margin of error of 4 percentage points and a 99% confidence level. Complete parts (a) and (b) below:---**a. If \( \hat{p} \) and \( \hat{q} \) are unknown:**- Required sample size \( n = 1037 \)*(Round up to the nearest integer.)*---**b. If it is assumed that 22% of adults can wiggle their ears:**- Required sample size \( n = \) [Blank for calculation]*(Round up to the nearest integer.)*

Margin of error(E)=4%=0.04confidence level=99%

Answered: Find the sample size needed to estimate…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Use the sample data and confidence level given below to complete parts (a) through (d). A research insitute poll asked respondents if they felt vulnerbale to identity theft. In the poll, n=1047 and x=574 who said "yes." Use 99% confidence level. a. find the best point of the population proportion p. (Round to three decimal places as needed.) b. Identity the value of the margin of error E. E = c. Construct the confidence level interval. ___ < p < ___ d. Write a statement that correctly interprets the confidence interval. Choose to correct Below A. One has 99% confidence that the sample proportion is equal to the population proportion. B. 99% of sample porportions will fall between the lower bound and upper bound. C. One has 99% confidence that the interval from the lower bound to the bound actually does contain the true value of the popuklation porportion. D. There is a 99% chance that the true value of the population proportion will fall between the lower bound and the…
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In a survey of 2345 adults, 729 say they believe in UFOs. Construct a 90 % confidence interval for the population proportion of adults who believe in UFOs. A 90%confidence interval for the population proportion is (Round to three decimal places as needed.) Interpret your results. Choose the correct answer below. A. With 90% confidence, it can be said that the sample proportion of adults who believe in UFOs is between the endpoints of the given confidence interval. B. With 90% probability, the population proportion of adults who do not believe in UFOs is between the endpoints of the given confidence interval. C. The endpoints of the given confidence interval shows that 90% of adults believe in UFOs. D. With 90% confidence, it can be said that the population proportion of adults who believe in UFOs is between the endpoints of the given confidence interval.
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Use the confidence interval to find the margin of error and the sample mean. (0.346,0.450) The margin of error is The sample mean is 9 五 0 SF10
Use the sample data and confidence level given below to complete parts (a) through (d). K A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n = 1100 and x = 501 who said "yes." Use a 99% confidence level. Click the icon to view a table of z scores. 10 on 11 me solve this "1 a) Find the best point estimate of the population proportion p. 0 (Round to three decimal places as needed.) View an example Get more help. on 5858 409 x PROV H command % 3 a w ER T Q ER AL G SDFO C с MacBook Air T II B U N M K O 38 Clear all cfnm P ? I command alt option
ok In a survey of 2279 adults, 720 say they believe in UFOs. Construct a 95% confidence interval for the population proportion of adults who believe in UFOs. A 95% confidence interval for the population proportion is (Round to three decimal places as needed.) Interpret your results. Choose the correct answer below. R OA. With 95% confidence, it can be said that the population proportion of adults who believe in UFOs is between the endpoints of the given confidence interval. OB. With 95% probability, the population proportion of adults who do not believe in UFOs is between the endpoints of the given confidence interval. OC. With 95% confidence, it can be said that the sample proportion of adults who believe in UFOs is between the endpoints of V C ◎可 F5 J % 250 T F6 دار 6 & X F7 & 7 N 8 F8 J 00 * 8 8 F9 M 09 9 K F10 O V 70°F Sunny A ☀- F11 O Alt ☀ P + F12 ^ Next 1:23 PM 11/23/2022 PrtSc CM +11 Inse
Answer question 12 and show all the steps.
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