Please use the following terms once and state why you would use that type of tes
ID: 2908154 • Letter: P
Question
Please use the following terms once and state why you would use that type of test:
z- test one way ANOVA independent groups t-test repeated measures t-test
one sample t-test repeated measures ANOVA correlation
1. In a study, participants were asked to plunge a hand into icy water and keep it there as long as the pain would allow. In one condition the participants repeated their favorite curse words while their hands were in the water. In the other condition, the same participants repeated a neutral word. Participants assessed how painful the water was in each condition. What statistical test will you use and why?
2. There is some evidence that high school students justify cheating in class on the basis of poor teacher skills or low levels of teacher caring. The researchers want to determine whether there are significant differences in student judgments dpeending on how they see their teachers. Teachers are classified as poor, average or good. what statistical test will you use and why?
3. Functional foods are those containing nutritional supplements in addition to natural nutrients. Researchers examined attitudes toward functional foods for college students by asking them to rate their general atittude toward such foods on a 7-point scale (higher score is more positive) researchers then tested for a difference in attitude between males and females. What statistical test will you use and why?
4. Researchers predict that as ap arent becomes more authoritarian, attachment to that parent decreases. Also, they predict that as a parent beocmes more authoritative or democratic in their parenting approach, children become more attached. Data is collected using established scales and the researchers have asked for your help in determining if their hypotheses are correct. What statistical test will you use and why?
5. A researcher is testing the hypothesis that consuming sports drinks during exercise improves endurance. A sample of N= 50 male college students is obtained and each student is given a series of three endurance tasks and asked to consume 4 ounces of the drink during each break between tasks. the overall endurance score fot his sample is M=53. for the general population of male college students wihtout any sports drinkm the scores for this task average u=50 and o=12. can the resesarcher conclude that the endurance scores with the sports drink are significantly higher than scores without the drink? Which statistical test will you use and why?
6. A recent study indicates that simply giving college students a pedomemter can icnrease walking. Students were given pedometers for a 12-week period and asked to record the average number of steps per day during weeks 1,6,12. Determine whether the mean number of steps changes were significantly from one week to another. Which test will you use and why?
7. For several years researchers have noticed that there appears to be a regular, year by year increase in the average IQ for the general population. To evaluate the size of the effect, a researcher obtained a 10-year old IQ test that was standardized to produce a mean IQ of u=100 for hte population 10 years ago. the test was then given to a sample of N=64 of todays adults. the average score for the sample was M=107 with s=12. based on the sample, is the average IQ for today's population significantly different from the average 10 years ago when the test would havep roduced a mean of u=100? what test and why?
Explanation / Answer
1. In a study, participants were asked to plunge a hand into icy water and keep it there as long as the pain would allow. In one condition the participants repeated their favorite curse words while their hands were in the water. In the other condition, the same participants repeated a neutral word. Participants assessed how painful the water was in each condition. What statistical test will you use and why?
As same participants were used in 2 different conditions , hence this is a repeated measures t test . The groups are not independent because both the groups have the same memebers
2. There is some evidence that high school students justify cheating in class on the basis of poor teacher skills or low levels of teacher caring. The researchers want to determine whether there are significant differences in student judgments dpeending on how they see their teachers. Teachers are classified as poor, average or good. what statistical test will you use and why?
there are 3 variables in this question
students judgement
low levels of teacher caring with 3 levels
Hence this becomes a case of 1 way anova , because there are more than 2 groups of teachers
3. Functional foods are those containing nutritional supplements in addition to natural nutrients. Researchers examined attitudes toward functional foods for college students by asking them to rate their general atittude toward such foods on a 7-point scale (higher score is more positive) researchers then tested for a difference in attitude between males and females. What statistical test will you use and why?
Here again we have 2 groups males and females , both the groups are independent and we want measure of there is a difference in the ratings of foods on a 7 point scale.
Hence this becomes a case of independent 2 samples t test
4. Researchers predict that as ap arent becomes more authoritarian, attachment to that parent decreases. Also, they predict that as a parent beocmes more authoritative or democratic in their parenting approach, children become more attached. Data is collected using established scales and the researchers have asked for your help in determining if their hypotheses are correct. What statistical test will you use and why?
as we want ot determine a relationship between 2 variables , as both the variables are measured on numeric scale , hence this becomes a correlation analysis . if the correltion is postive then we conclude that when one variable increases the other also increases , if the value is negative then when one variable increases the other decreases
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