According to the Center on Philanthropy at Indiana University, the mean charitable contribution per household among households with income of $1 million or more in the United States in 2005 was $17,072. A researcher believes that the level of giving has changed since then.
(a) Determine the null and alternative hypotheses,
(b) Explain what it would mean to make a Type I error, and
(c) Explain what it would mean to make a Type II error.