Data from adoption studies on handedness indicate that the effects of shared biological heritage are more...

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Data from adoption studies on handedness indicate that theeffects of shared biological heritage are more powerfuldeterminants of hand preference than sociocultural factors.Biological offspring were found to show nonrandom distributions ofright and non-right handedness as a function of parentalhandedness. In contrast, the handedness distribution of adoptedchildren as a function of parental handedness was essentiallyrandom. The following table gives the handedness of biologicaloffspring as a function of parental handedness.
Biological Offspring
Parental Handedness
(father × mother)
Right-HandedLeft-Handed
Right × Right29837
Right × Left296
Left × Right246
(a)Find the values in cells (2,2) and (3,2) of the expectedtable.
(b)Can a chi-square analysis be performed on the above table?
(c)Combine the last two rows in the above table to create a new 2× 2 table. (The meaning of the 2nd row in this new table would be\"at least one of the parents is left-handed\".)
If we use the resulting 2 × 2 table to test the hypothesis that thehandedness of the biological offspring is independent of thehandedness of the parents using the 1% significance level, what isthe value of the test statistic?
(d)Find the critical value for the test in (c).
(e)What is the conclusion?

Problem #2(a):

expected values (correct to 3 decimals)
separate your answers with a comma

(A) Yes, because at least one of the expected frequencies isless than 5. (B) Yes, because at least one of the observedfrequencies is less than 5. (C) No, because at least one of theexpected frequencies is less than 5. (D) No, because the populationis not normal. (E) Yes, because only some of the expectedfrequencies are less than 5. (F) No, because at least one of theobserved frequencies is less than 5. (G) Yes, because all of theobserved frequencies are at least 5.

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Parental Handedness RightHanded LeftHanded Total Right Right 298 37 335 Right Left 29 6 35 Left Right 24 6 30 Total 351 49 400 a Expected value for 2 2 49 35 400 4288    See Answer
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