Answer all please Ten hens whose eggs recently hatched were selected at random.

Question

Answer all please Ten hens whose eggs recently hatched were selected at random. From each of these hens, two-chicks were selected to test the effect of a vitamin supplement on early growth. The chicks in each pair were siblings of similar high birth weight. One chick in each pair was given the supplement and the other was not. After two weeks the weight of each chick was recorded. The researcher would like to test the research hypothesis that the supplement increases growth rate of chicks in the first weeks after hatching against the null hypothesis that it has no effect. The most appropriate test would be: a. z-test for the difference between two proportions b. chi-square test c. paired sample t-test d. two sample t-test Random digits generated by a random number generator are supposed to be equally likely. We run the generator several times and receive: Which type of test should be run to test whether the random number generator is working properly? a. goodness of fit chi-square test b. z-test test for one proportion. c. regression d. chi-square test for homogeneity

Explanation / Answer

Q.5> Since the each pair is supposed to have similar characteristics within themselves, and one chick in each pair was given the supplement. So we have to consider the difference in height in each pair. So ideal test in this case will be paired sample t-test. So, Option(c) is the correct choice. (Ans).

Q.6> Here we assume number of observations for each digit is likely to be same. So ideal test will be chi-square test for homogeneity. So Option(d) is the correct choice. (Ans).

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