Researchers wanted to investigate whether having an animal will significantly ma
ID: 3218851 • Letter: R
Question
Researchers wanted to investigate whether having an animal will significantly make you more attractive to people when you have an animal vs. when you do not. Participants were shown photographs of people without an animal and after a delay were shown a picture of the same person with an animal. The corresponding scores were gathered for before the animal picture and after the animal picture. Test whether having an animal will make a person seem more attractive (higher the score the better) in a one-tail test with an alpha of .05. What is standard error for the t statistic? Before animal:4, 5, 5, 7, 8, 8, 10 After animal: 6, 5, 4, 6, 8, 9, 12 (The scores are shown respectively). Please enter 2 digits after the decimal point.
Explanation / Answer
The statistical software output for this problem is:
Paired T hypothesis test:
D = 1 - 2 : Mean of the difference between After Animal and Before Animal
H0 : D = 0
HA : D > 0
Hypothesis test results:
Hence,
Standard error of t statistic = 0.48
Difference Mean Std. Err. DF T-Stat P-value After Animal - Before Animal 0.42857143 0.48092881 6 0.89113279 0.2036Related Questions
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