Mathematics, 28.12.2019 00:31 algahimnada

In a random sample of 9 cell phones, the mean full retail price was $546.70 and the standard deviation was $195.00. further research suggests that the population mean is $428.87. does the t-value for the original sample fall between minus−t 0.99 and st 0.99?

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In a random sample of 9 cell phones, the mean full retail price was $546.70 and the standard deviati...