Question

Based on information from Diagnostic Tests with Nursing Implications, Springhouse Corporation, for the population of healthy female adults, the mean red blood cell count (RBC) is 4.8 (millions of cells per cubic millimeter of whole blood). A researcher thinks the RBC is underestimated, so she conducts a test of significance using Null Hypothesis: µ ≤ 4.8 vs. Alternative Hypothesis: µ >4.8. If the true mean RBC is 4.75 and the null hypothesis is rejected, what has occurred?

Answer 1

If the null hypothesis is rejected, it means that the researcher has found enough evidence to support the alternative hypothesis that the mean red blood cell count is greater than 4.8. In this case, since the true mean RBC is 4.75 and the null hypothesis is rejected, it indicates that the true mean RBC is indeed greater than 4.8.

Step-by-step explanation:

If the null hypothesis is rejected, it means that the researcher has found enough evidence to support the alternative hypothesis. In this case, the alternative hypothesis is that the mean red blood cell count (RBC) is greater than 4.8.

Since the true mean RBC is 4.75, and the researcher rejected the null hypothesis, it suggests that the true mean RBC is indeed greater than 4.8.