The figures given below are (a) the theoretical trequencies of a distribution, and (b) the frequencies of the normal distribution having the same mean, standard deviation and the total frequency as in (a) : (a) : 1 5 20 28 42 22 15 2 (b) : 1 18 25 40 25 18 6. 1 Apply the x test of goodness of fit.

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