The PH of a Sample of River Water Is 6

question 171

Multiple Choice

The pH of a sample of river water is 6.0. A sample of effluent from a food processing plant has a pH of 4.0. What is the ratio of hydronium ion concentration in the effluent to the hydronium ion concentration in the river

• A) 1/3 times as acidic
• B) 1.5 times more acidic
• C) 10 times more acidic
• D) 100 times more acidic
• E) None of the above

---

Definitions:

Multiple Regression

A statistical analysis tool that assesses the effect of multiple independent variables on a particular dependent variable.

Stepwise Regression

A technique in regression modeling that involves automatically selecting which variables predict the outcome.

Nonparametric Tests

Statistical tests that do not assume a specific distribution shape for the population from which the samples are drawn.

Underlying Population

This term refers to the entire group from which a sample is drawn for statistical analysis, representing the total set of observations of interest.