QUESTION 2Researchers conducted two surveys about teens are their use of social media. The first survey asked a random sample of 800 U.S. teens about their use ofInstagram. A second survey asked the same questions to a random sample of 2253 Canadian teens. In these two studies, 73% of U.S. teens and 88% ofCanadian teens said that they use Instagram. Use these results to answer the following questions about the proportion of U.S. and Canadian teens thatuse Instagram. (Round to the nearest whole hundredth as needed).What is the difference between the proportion of U.S. teens and the proportion of Canadian teens?The standard error for these two samples isUsing a 99% confidence level, the lower limit isand the upper limit isOUEST ION 2Save All AnsweClick Save and Submit to save and submit. Click Save All Answers to save all answers.

The random variable use of Instagram follows binomial distribution. The sample size of U.S teens is…

Answered: Researchers conducted two surveys about…

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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If a researcher failed to use a random sample, how would this affect the research conclusion? If a researcher failed to use random assignment, how would this affect the research results?
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Are American men or women more into online dating? Researchers from a pop culture magazine conducted a study to see if there is a difference in the proportion of men and women under 30 that use online dating sites. They collected independent random samples of 96 women and 88 men, ranging from 18-30 years old, from across the US. Of the women, 67 reported using online dating sites, while 62 of the men reported using online dating sites. Assume the subjects responded honestly. What would be the test statistic and P-value for performing a hypothesis test Ho : P1 = P2 vs. HA : P1 + P2 ? Select one: O a. z =-0.098 ; P-value = 0.9204 O b. z =-1.13 ; P-value = 0.1292 O c. z =-3.77 ; P-value is approximately 0 O d. z =-0.098 ; P-value = 0.4602 O e. z =-1.13 ; P-value = 0.2594 Clear my choice
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