Business, 25.04.2020 03:12 jsdhhddb8445

A random sample of 40 college students has a mean earnings of $3120 with a sample standard deviation of $677 over the summer months. 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.

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A random sample of 40 college students has a mean earnings of $3120 with a sample standard deviation...

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