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In a test of a mean, the reported p-value is .025. Using α =.05 the conclusion would be to

Which of the following results in a smaller confidence interval width for the population mean (everything else held constant):

What is the probability of a Type I Error?

Which of the following decisions could result in a Type II error for a test?

The rejection region in a hypothesis test

Find the variance of X.

To use a p-value to make a conclusion in a hypothesis test, compare the p-value with

Lets say that you have data from the recent CIA World Factbook on electricity consumption in billions of kilowatt-hours (eleccons) and gross domestic product in billions of dollars (gdp) for the 30 most populous countries. For the purpose of this problem, assume that increases in electricity consumption tend to respond to increases in GDP (rather than the other way around). Consider the simple liner equaion  Y i = β 0 + β 1 X i + ε If you want to use the model to predict electricity consumption, say which variable should be the predictor (X) and which the response (Y) for this problem.

What type of control tissue should be used when performing the alcian blue pH 2.5?

A researcher thinks that if expectant mothers take vitamins, the birth weight of the baby will increase. The average birth weight of the population is 8.6 pounds. State the null and alternative hypotheses.