below the third table in a research report, concerning switching infant cow's milk at 6 months of age instead of 12 months , is a notation: "t(22)=-0.76, p=.41" what does this mean? (select all that apply)

a. the results are generalizable

b. there was a difference between groups

c. Apparently 24 subjects participated in the study

d. a type I error occurred

e the researcher failed to reject the null hypothesis

f. the difference between groups was not statistically significant

g. if there was an intervention, the intervention was more effective than the control condition

h. a t-test was performed