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A market researcher recently sent out a survey to determine if the percentage of adults who use social media has changed from 68%, which was the percentage of adults who used social media seven years ago. She found that of the 467 people who responded to survey, 336 stated that they currently use social media. At the .02 significance level, do we have evidence that that the percentage of adults who use social media has changed?

A market researcher recently sent out a survey to determine if the percentage of adults who use social media has changed from 68%, which was the percentage of adults who used social media seven years ago. She found that of the 467 people who responded to survey, 336 stated that they currently use social media. At the .02 significance level, do we have evidence that that the percentage of adults who use social media has changed?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 8SGR
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Again, since the DM is statistically savvy, he is resolved to confront the player only if he can establish that the player rolled a mean score significantly higher than the expected mean at the .05 significance level. Based on this, does he have evidence that the player may have cheated? Problem 2: A market researcher recently sent out a survey to determine if the percentage of adults who use social media has changed from 68%, which was the percentage of adults who used social media seven years ago. She found that of the 467 people who responded to survey, 336 stated that they currently use social media. At the .02 significance level, do we have evidence that that the percentage of adults who use social media has changed?
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