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A random sample of 18 observations taken from a population that is normally distributed produced a sample mean of 42.4 and a

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Given Data: á - H2H O8 n=18 001 ll -46 a) Ho: ll=46 If an-lz 18 -1 = 11 Hi : l<u6 tobserved -3.6 =x-ll olsa 42.446 8/ Vie :-1

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