If the population mean is unknown,one can use sample data as the basis from which to make probability statements about the true (but unknown)value of .
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Q8: The sample statistic s is an
Q9: The t distribution is used to calculate
Q10: In determining the necessary sample size in
Q11: A 95% confidence interval means that there
Q12: A confidence interval will allow us to
Q14: If the population mean
Q15: Whenever sample data are used for
Q16: If a sample has 16 observations
Q17: If we want to cut the maximum
Q18: With other factors unchanged,a higher confidence level
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