Question

Researchers believe that learning through video imitation will improve self-care skills. For 6 months the researchers worked with mentally impaired individuals in which half were taught self-care skills through video imitation and the other half through physical guidance. At the end of the 6 months, individuals were asked to independently perform the self-care task and were rated on the level of required assistance where a higher score indicates more assistance. What can be concluded with an α of 0.05? The rating data are below.

video imitation	physical guidance
15 13 16 17 19 15 16 14 20	10 10 17 11 11 14 11 14 16

a) What is the appropriate test statistic?
---Select One--- (na, z-test, One-Sample t-test, Independent-Samples t-test, or Related-Samples t-test)

b)
Condition 1:
---Select One--- (video imitation, self-care skills, physical guidance, 6 months, or mentally impaired)
Condition 2:
---Select One--- (video imitation, self-care skills, physical guidance, 6 months, or mentally impaired)

c) Obtain/compute the appropriate values to make a decision about H₀.
(Hint: Make sure to write down the null and alternative hypotheses to help solve the problem.)
critical value = _{______} ; test statistic = _{_______}

Decision:  ---Select One--- (Reject H0 or Fail reject H0)

d) If appropriate, compute the CI. If not appropriate, input "na" for both spaces below.
[ ____ , _____ ]

e) Compute the corresponding effect size(s) and indicate magnitude(s).
If not appropriate, input and/or select "na" below.
d =_____ ;  ---Select One--- (na, trivial effect, small effect, medium effect, or large effect)
r² = ____ ;  ---Select One--- (na, trivial effect, small effect, medium effect, or large effect)

f) Make an interpretation based on the results. Which is correct?

a) Self-care skills improve when learned through physical guidance.

b)Self-care skills improve when learned through video imitation.    

c)There is no significant self-care difference between video imitation and physical guidance.

Answer 1