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.

The results of a t-test showed p-values for the following comparisons: p= 0.024 between mean heart rate in 18-30 year old patients at baseline vs exercise, and p=0.085 between mean heart rate in 45-60 year old patients at baseline vs exercise. Which of the following is the correct graph if the figure legend indicates ‘ *p<0.05 ’?

a. Look at the data using a histogram and describe the shape of the distribution.b. Explain why the conditions that allow us to safely use the t-test are met regardless of your findings in (a).

Identify the scenario in which a researcher should choose to use a bar graph.1 pointThe university dean would like to show the percentage of students earning various GPA intervals for the graduating class at a local university.A psychology researcher would like to show the percentage of participants who slept for a given number of hours per night, measured in whole hours.A health researcher would like to show the relationship between minutes of exercise and anxiety score.An instructor would like to show the frequency of students’ preference for a take-home or in-class final exam.7.Question 7There is a c

Question 6Identify the scenario in which a researcher should choose to use a bar graph.1 pointAn instructor would like to show the frequency of students’ preference for a take-home or in-class final exam.A health researcher would like to show the relationship between minutes of exercise and anxiety score.A psychology researcher would like to show the percentage of participants who slept for a given number of hours per night, measured in whole hours.The university dean would like to show the percentage of students earning various GPA intervals for the graduating class at a local university.

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