The contingency table shows a random sample of engineering, psychology, and biol

Question

The contingency table shows a random sample of engineering, psychology, and biology articles and if and how they were coauthored At = 0.05, can you conclude that the subject Coauthorship EngineeringPsychology! Biology matter and coauthorship Coauthored are related? Complete Intermationally coauthored parts (a) through (d). Not coauthored Subject matter 49 24 37 43 13 47 50 12 (a) Identify the claim and state the null and alternative hypotheses Ho: Coauthorship and subject matter are independent Ha Coauthorship and subject matter are dependent The alternative hypothesis is the claim. (b) Determine the degrees of freedom, find the critical value, and identify Calculate the degrees of freedom. d.f

Explanation / Answer

degrees of freedom = (r - 1)(c - 1)

here rows(r)=3

column(c)=3

therfore df=(3-1)(3-1)

=2*2

=4

degree of freedom =4

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