Mathematics, 20.03.2020 09:46 jambunny26
In a random sample of 18 families, the average weekly food expense was $95.60 with a sample standard deviation of $22.50. Determine whether a normal distribution (Z values) or a t- distribution should be used or whether neither of these can be used to construct a confidence interval. Assume the distribution of weekly food expense is normally shaped.
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In a random sample of 18 families, the average weekly food expense was $95.60 with a sample standard...
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