Question

Chi-squared test of independence and goodness-of-fit. 3. The distributor of Mixed Nut Special claims that the...

Chi-squared test of independence and goodness-of-fit.

3. The distributor of Mixed Nut Special claims that the content per bag is 12%

brazil nuts, 25% peanuts, 20% cashew nuts, 28% hazlenuts and 15% walnuts.

Several bags were selected and the total numbers of nuts of each type were

recorded as follows:

Brazil

Peanut

Cashew

Hazlenut

Walnut

Total

Observed

146

315

???

287

170

1130

Expected

???

???

???

???

???

???

  1. Fill in the missing cells marked ???

  1. Calculate the chi squared statistic for these data, and hence test the distributors’ claim. Which type(s) of nut seem to be over or under represented?

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