The company ran an experiment to test the effect of using different specific influencers to promote...
The company ran an experiment to test the effect of using different specific influencers to promote a product on purchase intention. By random assignment, 90 people were divided into three different groups with 30 people in each group. Each group viewed one image, from one out of three influencers, along with a product and were asked to whether they would like to purchase the product (“yes”/1 or “no”/0). Which statistical test would you use, explain.
Homework Answers
You could use the chi-square test for more than 2 categories. In order to visualize the difference between groups, one can consider constructing a 95% confidence interval for each of the categories. Here the groups formed are non-overlapping, thus categories are considered statistically significant.
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The company ran an experiment to test the effect of using
different specific influencers to promote...
A teacher decided to test the effect of sound when students were studying Students in de...
A teacher decided to test the effect of sound when students were studying Students in de were randomly assigned into three groups of eight. All groups where when the same material and 30 minutes to study prior to being given a quiz. One group was exposed to consistent background music, one group was exposed to a soundtrack of minor construction work where the volume fluctuated and the third group was left in quiet to study. The teacher believes a constant...
Subject bias can occur in an experiment when the participants are aware of the purpose of...
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ly assigns. 50 participants to one of two groups (25 in each group). One assessed. 11....
ly assigns. 50 participants to one of two groups (25 in each group). One assessed. 11. Write a rescarch hypothesis and null hypothesis for Dr. Cunningham's research. Ho : 12. What statistical test should Dr. Cunningham use to test his hypothesis? (be specific) 13. Dr. Cunningham replicates and extends his experiment. This time he uses three groups, one receives the new memory intervention, one receives relaxation training, and one does not receive any intervention. He then tests their memory. What...
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Below are several research scenarios. Indicate which set of statistical analyses (e.g., ANOVA, independent samples t test, correlated samples t test, correlation, chi-square, regression) should be used to analyze the data collected in study, and explain why that statistical test should be used (2 points each; 8 points total). A researcher developed a video designed to enhance creative writing. Fifty high school students were asked to participate in the study. Twenty-five were randomly assigned to group A and the other...
Solve by using R program or any other statistical program(python,R) 2. Three types of ferilizer are...
Solve by using R program or any other statistical
program(python,R)
2. Three types of ferilizer are to be tested to see which one yields more corn crop. Forty similar plots of land were available for testing purposes. The 40 plots are divided at random into four groups, 10 plots in Group 1. Similarly, Fertilizers 2 and 3 were applied to the plots in Group 2 and 3, respectively. The corn plants in Group 4 were not given any fertilizer; it...
8) A designed experiment is described. Identify the specified element. A researcher wants to investigate whether...
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QUESTION 3 a) Researchers want to test the effect of three different diets on the weight...
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2) A company making mattresses wants to test two different designs on elderly people who typically...
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In a paper the authors distinguish between spending money on experiences (such as travel) and spending...
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A teacher decided to test the effect of sound when students were studying Students in de were randomly assigned into three groups of eight. All groups where when the same material and 30 minutes to study prior to being given a quiz. One group was exposed to consistent background music, one group was exposed to a soundtrack of minor construction work where the volume fluctuated and the third group was left in quiet to study. The teacher believes a constant...
Question 25 2 pts A researcher believes that recall of verbal material differs with the level of processing. He divided his subjects into three groups and manipulated the level of processing they used when learning a list of words. In the 'low processing group, participant read each word and were instructed to count the number of letters in the word. In the "medium processing group, participants were asked to read each word and think of a word that rhymed. In...
ly assigns. 50 participants to one of two groups (25 in each group). One assessed. 11. Write a rescarch hypothesis and null hypothesis for Dr. Cunningham's research. Ho : 12. What statistical test should Dr. Cunningham use to test his hypothesis? (be specific) 13. Dr. Cunningham replicates and extends his experiment. This time he uses three groups, one receives the new memory intervention, one receives relaxation training, and one does not receive any intervention. He then tests their memory. What...
Solve by using R program or any other statistical
program(python,R)
2. Three types of ferilizer are to be tested to see which one yields more corn crop. Forty similar plots of land were available for testing purposes. The 40 plots are divided at random into four groups, 10 plots in Group 1. Similarly, Fertilizers 2 and 3 were applied to the plots in Group 2 and 3, respectively. The corn plants in Group 4 were not given any fertilizer; it...
QUESTION 3 a) Researchers want to test the effect of three different diets on the weight gain in 2 week- Diet 2 16 old lambs. The following table records the weight gain by the lambs. Diet 3 15 10 17 Diet 1 16 21 18 At the 0.05 level of significance, assess that there is a difference in the weight gain for each of the diet. (16 marks) b) Ten plots, each 10.4 meters, were randomly chosen in a large...
2) A company making mattresses wants to test two different designs on elderly people who typically have more trouble sleeping through the night, to see which is more effective at keeping people asleep for more hours. One is a mattress that conforms to the body (mattress #1) the other is a mattress that elevates to different levels to help with sleep apnea and snoring (mattress #2). The company wants to know which mattress makes more of a difference in helping...
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