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22 November, 22:32

Can parents distinguish their own children by smell alone? to investigate, porter and moore (1981) gave new t-shirts to children of 9 mothers. each child wore his or her shirt to bed for three consecutive nights. during the day, from waking until bedtime, the shirts were kept in individually sealed plastic bags. no scented soaps or perfumes were used during the study. each mother was then given the shirt of her child and that of another, randomly chosen child and asked to identify her own child's shirt by smell. eight of nine mothers identified their children correctly. considering the null distribution table provided, what is the probability of obtaining 8 or more correct identifications?

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  1. 23 November, 00:53
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    Well, the Probability of getting exactly eight is the value of 8 in the graph, which is 0.018. In this case, the probability of the result was 9 of 9 was 0.002, so, for comprobate the date Just takes the sum of each bar 8 and more, just summing 8 and 9: 0.018+0.002=0.020.

    This means, in this study, we must be careful because the number of participants is too small to generalize the results.
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