question archive In a section of MATH&146, the instructor says that "half of senior citizens in the USA have ever bought something online using a smartphone
In a section of MATH&146, the instructor says that "half of senior citizens in the USA have ever bought something online using a smartphone
Subject:StatisticsPrice: Bought3
In a section of MATH&146, the instructor says that "half of senior citizens in the USA have ever bought something online using a smartphone." A group of statistics students thinks the percentage of senior citizens in the USA who have ever bought something online using a smartphone is actually less than that, and as a group project, will conduct a sample of Americans over the age of 65 in order to use a hypothesis test. They will use = 0.10 as their significance level.
a. [3 points] What hypotheses should the group use? Give the hypotheses in words, and also give them using correct symbols.
b. [2 point] Give a specific example of a P-value that would support the group's belief that the poll's estimate is too low. (Do not give a range - just give an example!)
c. [1 point] To obtain their sample, one of the group members arranges with their cousin, a social media influencer with over 50000 followers on Instagram, to post a poll to their social media accounts so it reaches the widest possible audience. Is this a good idea? Explain.
