Asample survey of 54 discount brokers showed that the mean price charged for a trade of 100shares at 50 per share was $33.77 (aaii journal, february 2006). the survey is conducted annually. with the historical data available, assume a known population standard deviation of $15.
a. using the sample data, what is the margin of error associated with a 95% confidence interval?
b. develop a 95% confidence interval for the mean price charged by discount brokers for a trade of 100 shares at $50 per share.

answer: idk

step-by-step explanation:

this excerpt is taken from the book “we shall not be moved : the women’s factory strike of 1909 “ and is written by joan dash. it is the story of the great strike when almost 30thousand women working in factories in america formed a union to fight unsafe working conditions, long working hours and miserable wages.

question: which best states the author’s purpose for including this information in the text?

answer: to challenge the reader’s ideas about a historical event