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I conduct an analysis of variance in which I have 3
I conduct an analysis of variance in which I have 3 between-groups degrees of freedom, 11 within-groups degrees of freedom, and 14 total degrees of freedom. How many groups were in my dataset?Group of… read more
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Previous studies suggest that vegetarians may not receive enough
Previous studies suggest that vegetarians may not receive enough zinc in their diets. As the zinc requirement is particularly important during pregnancy, researchers conducted a study to determine whe… read more
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ANOVA Degrees of freedom and the F statistic The General
ANOVA: Degrees of freedom and the F statistic The General Social Survey is an annual survey given to a random selection of about 1500 adults in the United States. Among the many questions asked are "W… read more
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The General Social Survey is an annual survey given to a random
The General Social Survey is an annual survey given to a random selection of about 1500 adults in the United States. Among the many questions asked are "What is the highest level of education you've c… read more
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The General Social Survey is an annual survey given to a random
The General Social Survey is an annual survey given to a random selection of about 1500 adults in the United States. Among the many questions asked are "What is the highest level of education you've c… read more
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The General Social Survey is an annual survey given to a random
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For Susan Athena Why is the F distribution important
"For Susan Athena" Why is the F distribution important? How do you determine if a significant difference exists among the groups in ANOVA? How do you determine differences between the groups in ANOVA?… read more
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The General Social Survey is an annual survey given to a random
The General Social Survey is an annual survey given to a random selection of about 1500 adults in the United States. Among the many questions asked are "What is the highest level of education you've c… read more
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I am in statistics class and dont understand what this means.
I am in statistics class and don't understand what this means. My goal is to identify the null hypothesis, alternate hypothesis, and explain the outcome. The study is a sample of 72 pre-service studen… read more
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Scott A researcher draws one sample of heart patients, and
Scott: A researcher draws one sample of heart patients, and then uses their diagnoses to classify them into groups based on severity of heart disease (at-risk, had one heart attack, had two or more he… read more
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A medical researcher wants to try three different techniques
A medical researcher wants to try three different techniques to lower cholesterol levels. The subjects are randomly assigned to one of three groups. Group 1 is given medication, Group 2 is given an ex… read more
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In a contingency table a sample of 400 people is classified
In a contingency table a sample of 400 people is classified by gender and hair color (4 groups: blond, brown, black, and red). How many degrees of freedom are there?… read more
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In a contingency table a sample of 400 people is classified
In a contingency table a sample of 400 people is classified by gender and hair color (4 groups: blond, brown, black, and red). How many degrees of freedom are there? A. 3 B. 8 C. 399 D. None of these … read more
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which of the following is not a characteristic of the X2 a).
which of the following is not a characteristic of the X2? a). it is not negative b). its shape is based on the sample size c).it approaches a normal distribution as the degrees of freedom increase d).… read more
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A researcher reports t(24) 5.30 for an independent-measures
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Suppose we studied the relationship between social support
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3. Three different fertilizers were applied to a field of celery.
3. Three different fertilizers were applied to a field of celery. In computing F, how many degrees of freedom are there in the numerator? A. 0 B. 1 C. 2 D. 3 E. None of the above… read more
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4. Suppose a package delivery company purchased 14 trucks at
4. Suppose a package delivery company purchased 14 trucks at the same time. Five trucks were purchased from manufacturer A, four from B and five from manufacturer C. The cost of maintaining each truck… read more
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