7) The weights, in grams, of mice are normally distributed with mean µ. A biologist takes a random sample of 10 mice. She weighs each mouse and records its weight. A B CDEF G H IJ 50 48.3 47.5 54 38.9 42.7 50.1 46.8 40.3 41.2 Mouse Weight d) The 10 mice are then fed by the biologist on a special diet. They are weighed again after two weeks. Their weights in grams are as follows: A B 52.1 47.6 50.1 | 52.3 42.2 44.3 51.8 48| G H Mouse D E F Weight after diet Conduct, at the 5% level of significance, an appropriate statistical test whether or not the diet causes an increase in the mean weight of the mice. 41.9 43.6

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