Instructions
For this Assignment, review this week’s Learning Resources, including the 5-step approach to hypothesis testing document. Read the research scenario, below, and then answer the questions related to the steps that must be followed to make the appropriate decision as to reject, or fail to reject, the null hypothesis.
Research Scenario
Hematocrit levels (g/dL) from healthy term infants form a normal distribution with m = 61 and s = 7. Several studies have shown that the risk of anemia (indicated by low hematocrit levels) is decreased with late cramping of the umbilical cord. Using clinical data, a researcher measured hematocrit levels from a sample of n = 100 healthy term infants with late cord cramping. The average hematocrit level (g/dL) for this sample was x̅ = 62. Do these data indicate that late cord cramping has a significant effect on hematocrit levels? Test with p=.05.
Note
µ = population mean
x̅ = sample mean
s = standard deviation
Step 1: Set up your hypothesis and determine the level of significance
State the null hypothesis
Answer:
Answer:
State the alternative hypothesis
Answer:
Answer:
Determine the Level of significance
Answer:
Step 2: Select the appropriate test statistic
Answer:
Step 3: Set up the decision rule
Answer:
Step 4: Compute the test statistic
Answer:
Step 5: Conclusion
Answer:
Answer:
Instructions For this Assignment, review this week’s Learning Resources, including the 5-step approach to hypothesis testing...
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