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Mathematics, 21.06.2019 13:50
Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean
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Mathematics, 21.06.2019 16:30
Which elements in the set below are integers? 12, β3β4,β 25 , β7, β 5 , 14β7, 9 a. 12, β 25 , β7, 9 b. 12, β 25 , β7, 14β7, 9 c. β3β4, 25 , β 5 ,14β7 d. 12, β7, 9
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Mathematics, 21.06.2019 20:00
The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?
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Mathematics, 21.06.2019 23:00
Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.
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