SOLUTION: n a random sample of 9 cell​ phones, the mean full retail price was ​$505.20 and the standard deviation was ​$191.00. Further research suggests that the population mean is â€
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-> SOLUTION: n a random sample of 9 cell​ phones, the mean full retail price was ​$505.20 and the standard deviation was ​$191.00. Further research suggests that the population mean is â€
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Question 1155458: n a random sample of 9 cell​ phones, the mean full retail price was ​$505.20 and the standard deviation was ​$191.00. Further research suggests that the population mean is ​$428.67. Does the​ t-value for the original sample fall between minust 0.99 and t 0.99​? Assume that the population of full retail prices for cell phones is normally distributed. Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! t= (x bar-mean)/s/sqrt(n)
=(428-505.20)/191/sqrt(9)
=-77.20*3/191
=-1.21
No, it falls outside the range given.
