Just need the t-value for part D. Self-efficacy is a general concept that measur
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Question
Just need the t-value for part D.
Self-efficacy is a general concept that measures how well we think we can control different situations. A multimedia program designed to improve dietary behavior among low-income women was evaluated by comparing women who were randomly assigned to intervention and control groups. Participants were asked, "How sure are you that you can eat foods low in fat over the next month?" The response was measured on a five-point scale with 1 corresponding to "not sure at all" and 5 corresponding to "very sure." Here is a summary of the self- efficacy scores obtained about 2 months after the intervention: Group Intervention 163 4.12 1.19 Control 212 3.65 1.12 (a) Do you think that these data are Normally distributed? Explain why or why not. The distribution is not Normal because the sample included only women The distribution is Normal because the standard deviation is smaller than the mean The distribution is Normal because the sample sizes are large. The distribution is Normal because the sample was randomly assigned The distribution is not Normal because all scores are integersExplanation / Answer
Given that,
mean(x)=4.12
standard deviation , s.d1=1.19
number(n1)=163
y(mean)=3.65
standard deviation, s.d2 =1.12
number(n2)=212
we use test statistic (t) = (x-y)/sqrt(s.d1^2/n1)+(s.d2^2/n2)
to =4.12-3.65/sqrt((1.4161/163)+(1.2544/212))
to =3.889
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