Martina believes that high doses of caffeine can slow a person's reaction time. in order to test this belief, she had five friends each drink three 8 ounce cups of coffee and then measures their reaction time on a learning task. what is wrong with martina's research strategy

Explain the difference between an independent and dependent sample. choose the correct answer below. a. in an independent sample, the individuals are chosen without replacement; in a dependent sample, the individuals are chosen with replacement. b. in a dependent sample, one would use a two-tailed hypothesis test; in an independent sample, one would use a one-tail hypothesis test. c. a sample is independent when an individual selected for one sample does not dictate which individual is to be in the second sample. a sample is dependent when an individual selected for one sample dictates which individual is to be in the second sample. d. a sample is independent when an individual selected for one sample dictates which individual is to be in the second sample. a sample is dependent when an individual selected for one sample does not dictate which individual is to be in the second sample. independent samples are often referred to as matched-pairs samples.

After world war i, how did the allied countries hope to keep germany from becoming too powerful again? question 5 options: united states took over german military bases. germany was not allowed to have a large army or navy. germany was allowed to keep its colonies. germany did not have to pay any war debts to the allied countries.

Lava and other matierls luanced from a volcano and into the air are referenced as