Please sir answer..

In a study of white blood cell counts (WBC) among cancer patients, the mean WBC for this sample is 128 (95% CI 118, 138). In the general population, the mean WBC count using this measure is 120.

Based on the confidence intervals, do you think cancer patients have a significantly different WBC count than the general population (at alpha=.05)? No, there is no significant difference. Yes, cancer patients have a significantly higher mean WBC than the general population. Yes, cancer patients have a significantly lower mean WBC than the general population. An additional study of white blood cell counts (WBC) among the same cancer patients found a the mean WBC for this sample of 92 (95% CI 84, 100). What is the most likely reason for the difference in this sample's WBC count compared to the previous sample? O Differences in how WBC counts were measured. O Greater variability in this sample. O Confounding due to factors such as gender and race/ethnicity. None of the above