Question

Researchers hypothesize that learning through 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 imitation and the other half through physically guided practice. 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 means more assistance. What can the researchers conclude with an α of 0.01. The rating data are below.

imitation	physical guidance
15 13 16 17 19 21 16 14 20	11 10 17 11 11 14 11 14 16

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

b)
Condition 1:
---Select--- imitation self-care skills mentally impaired physical guidance 6 months
Condition 2:
---Select--- imitation self-care skills mentally impaired physical guidance 6 months

c) Compute the appropriate test statistic(s) 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--- Reject H0 Fail to 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--- na trivial effect small effect medium effect large effect
r² =  ;  ---Select--- na trivial effect small effect medium effect large effect

f) Make an interpretation based on the results.

Self-care skills improve when learned through physical guidance.Self-care skills improve when learned through imitation.    There is no significant difference in self-care skills between imitation and physical guidance.

Answer 1