Assume we know that the reading, X, a spectrometer will produce is anormal random variable with mean µ (true unknown level of iron contam-ination) and standard deviation σ = 5 ppm. How large a sample size, n, do we need so that |X¯ − µ| ≤ 1 with probability 0.95?

Which type of evidence would support the author's claim?

How does cultural diffusion affect civilization

All of the following statements point out negative aspects of the gilded age except: a. politicians gave government jobs to political supporters. b. political bosses cheated large cities out of millions of dollars. c. industrialists bribed members of congress to ensure favorable votes. d. in 1903, wisconsin became the first state to hold primary elections.