In a random sample of 520 adults, the mean was 150 and the standard deviation was 4.5 . The study was reported with a \( 95 \% \) confidence level, and the confidence interval for the study was \( 150 \pm 0.39 \). What range of values shows the confidence interval for the study? 146.1 to 153.9 149.61 to 150.39 150 to 150.39 150 to 153.9 DONE

The confidence interval for the study is calculated by taking the mean and adding and subtracting the margin of error. Here, the mean is 150, and with a margin of error of 0.39, the interval is \( 150 - 0.39 \) to \( 150 + 0.39 \). This gives us a range of 149.61 to 150.39. To visualize it: if you picture the confidence interval as a cozy blanket around the mean, it's just snug enough to capture where most of the estimated values lie. So, it’s a lovely little range from 149.61 to 150.39!