Mathematics, 13.07.2019 14:00 smonahan2023
In a random sample of 28 families, the average weekly food expense was $95.60 with a standard deviation of $22.50. determine whether a normal distribution 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 expenses is normally shaped. a. cannot use normal distribution or t-distribution. b. use the t-distribution. c. use normal distribution.
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