9.64 Is steak your favorite barbeque food? July is NationalGrilling Month in the United States. A Harris Poll re-ported on a survey of Americans' grilling preferences.When asked about their favorite food prepared on a bar-beque grill, 662 of 1,250 randomly sampled Democrats pre-ferred steak, as compared to 586 of 930 randomly sampledRepublicans.a. Give a point estimate for the proportion of all Democratswho prefer steak as their favorite barbeque food.b. Give a point estimate for the proportion of allRepublicans who prefer steak as their favorite barbe-que food.c. Give a point estimate for the difference between theproportions of all Democrats and all Republicans whoprefer steak as their favorite barbeque food.d. Construct a 95% confidence interval for the differ-ence between the proportions of all Democrats and allRepublicans who prefer steak as their favorite barbe-que food.

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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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By a small margin, Facebook remains the top choice of social media over all ages, with 29% using Facebook most often among those using social media sites. However, more visually oriented social networks such as Snapchat and Instagram continue to draw in younger audiences. When asked "Which one social networking brand do you use most often?" the results in the table show the top brands chosen by Americans aged 12-34 who currently use any social networking site or service. Social M edia Site Faceboo k Snapchat Instagra m Twitter Percentage That Use Most Often 29 28 26 6 20 (a) What is the sum of the percentages for these top social media sites? Give your answer as an exact number. Macmillan Learning top social media sites: What percent of Americans aged 12-34 use other social media sites most often? Give your answer as an exact number. other social media sites: do %
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