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For a certain time series, you have produced a correlogram with an autocorrelation function that includes twenty four monthly observations; . Your calculated Box-Pierce Q-statistic is 19.50 and your calculated Ljung-Box Q-statistic is 27.90. You want to determine if the series is white noise. Which is your best conclusion (given CHISQ.INV(0.95, 24) = 36.41)?