If drinking red wine is correlated with low cholesterol, this doesn't always mean that drinking a lot of red wine will cause a person's cholesterol levels to go down True False When participants in a month-long experiment become tired over time and this effects their responses in the experiment, this is an example of a(n): testing effect O selection effect O maturation effect O history effect When the economy crashes and this impacts the results of a test marketing study done by your company, this is an example of a(n): O maturation effect O cohort effect testing effect history effect Range, standard deviation, and variation belong to which of the following categories? O none of the other choices thentioned O measures of central tendency O array data measures of dispersion Which of the following characteristics is NOT a property of a standard normal curve? the curve approaches the X-axis more closely when z is greater than + 3 O the curve has a maximum height when z = 1 the curve is symmetrical O the total area under the normal curve and above the X-axis is the total probability of the distribution, which is equal to 1 One of the purposes of regression is to predict values of the independent variable at different levels of the dependent variable. O True O False