Formulate the Null and Alternative Hypothesis in Each Case

question 103

Essay

Formulate the null and alternative hypothesis in each case:
a.Ten years ago the average American drank 2.5 cups of coffee per day.You suspect that amount has changed since then.
b.A researcher at Ohio State University speculates that the average SAT score for entering freshmen is higher than the national average of 1,650.
c.The manager of the University of Iowa bookstore suspects the average amount of money a student spends on books is less than the reported $400.

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Definitions:

Theodore Roosevelt

The 26th President of the United States (1901-1909), known for his progressive policies, conservation efforts, and key role in negotiating the end of the Russo-Japanese War.

Robert La Follette

An American politician and reformer, known for his role as a leader of the Progressive Movement and his efforts to fight corporate power and corruption.

World War I

A global conflict that took place primarily in Europe between 1914 and 1918, involving many of the world's great powers.