Movie executives want to know if a movie watcher’s heart rate increases when they watch certain types of movies. Subjects in the experiment were given a free movie ticket and randomly assigned to watch one of four movies: an action-adventure film, a horror film, a romantic comedy, or an animated children’s film. They measured the average heart rate of all subjects while watching the assigned film.Which of the following is the most appropriate statistical test to use to test if the average heart rate of the movie watchers was different for the four types of movies? Two-sample t-test Matched pairs t-test Chi-squared test for independence Inference for regression ANOVA

The figure legend of a bar graph, showing the mean heart rate of 5 individuals before and after exercise, indicates that a t-test was used as a statistical analysis method. Which of the following best describes why the t-test was used? Group of answer choicesThe t-test was used for analyzing categorical data about the individuals.The t-test was used to compare the 5 sets of heart rates to one another.The t-test was used to compare the heart rate means before and after exercise.The t-test was used because the data did not follow a normal distribution.

A physical therapy researcher was interested in determining the impact of two different exercises. The investigator suspected that the two exercises produced a different level of activity in the muscle. Each of 16 subjects performed both exercise 1 and exercise 2, and the results are shown (for each subject, the order of the exercises was randomly assigned and sufficient rest time was provided between the two exercises).Which of the following is the most appropriate statistical test to use to determine the impact of the two difference exercises? Matched pairs t-test ANOVA Chi-squared test for independence Two-sample t-test Inference for regression

A physical therapy researcher was interested in determining the impact of two different exercises. The investigator suspected that the two exercises produced a different level of activity in the muscle. Each of 16 subjects performed both exercise 1 and exercise 2, and the results are shown (for each subject, the order of the exercises was randomly assigned and sufficient rest time was provided between the two exercises).Which of the following is the most appropriate statistical test to use to determine the impact of the two difference exercises? Chi-squared test for independence Matched pairs t-test Two-sample t-test ANOVA Inference for regression

An athletic trainer wants to find out if there is a significant difference in the mean height of football players and basketball players in a large school district. She randomly selects 100 high school varsity football players and 100 high school varsity basketball players to compare the mean heights for each group.Which of the following is the most appropriate statistical test to use to determine if there is a significant difference in mean height between basketball and football players? ANOVA Matched pairs t-test Inference for regression Chi-squared test for independence Two-sample t-test

An athletic trainer wants to find out if there is a significant difference in the mean height of football players and basketball players in a large school district. She randomly selects 100 high school varsity football players and 100 high school varsity basketball players to compare the mean heights for each group.Which of the following is the most appropriate statistical test to use to determine if there is a significant difference in mean height between basketball and football players? Chi-squared test for independence Matched pairs t-test Inference for regression ANOVA Two-sample t-test