A marketing survey involves product recognition in New York and California. Of 679 NewYorkers surveyed, 256 knew of the product while 208 of 631 Californians knew of the product.Construct a 99% confidence interval for the difference between the two populationproportions, P₁-P₂ (where p₁ is the proportion of New Yorkers who knew of the product, andP₂ is the proportion of Californians who knew of the product).Give your answers as decimals, rounded to 3 places after the decimal point (if necessary).99% confidence interval for P₁ - P2:

given data n1 = 679 x1 = 256p^1 = x1n1 = 256679 = 0.3370 n2 = 631 x2 = 208 p^2 = x2n2 =…

Answered: A marketing survey involves product…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=935 and x=561 who said "yes." Use a 95% confidence level.
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The question was asking for 99% confidence interval for pop
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You want to create a confidence interval for the difference in the percent of people over 40 who took music lessons as children and the percent of people 20-40 who took music lessons as children. You decide to use the Plus Four method. You ask 30 people over 40 and find that 21 of them took music lessons as children. You ask 25 people 20-40 and find that 13 took music lessons as children. Fill in the blanks for what you would put into your calculator's interval function. Have people over 40 be group 1. X1 = n1 = X2 = n2 =
each item # 7-8. 7. Researchers study the effect of political commercials and the likelihood of people inspired to vote for former President Trump in the 2024 presidential election. They show a political commercial to a random sample 150 people. The researchers found a 90% confidence interval for the proportion of people who were influenced to vote for former President Trump after viewing the political commercial to be (0.56, 0.72). Which is true based on the given confidence interval? Select the two correct answers. e. a. We are 90% confident that the true proportion of people inspired to vote for former President Trump after viewing a political commercial is between 0.56 and 0.72. b. 90% of all 90% confidence intervals constructed in this way will capture the true proportion of people inspired to vote for former President Trump after viewing a political commercial. c. We're 90% sure that the proportion of people in this research sample inspired to vote for Sve former President Trump…
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