*PLEASE show in excel A different investigator conducts a second study to investigate whether there is a difference in mean PEF in children with chronic bronchitis as compared to those without. Data...

*PLEASE show in excel

A different investigator conducts a second study to investigate whether there is a difference in mean PEF in children with chronic bronchitis as compared to those without. Data on PEF are collected and summarized below. Based on the data, is there statistical evidence of a lower mean PEF in children with chronic bronchitis as compared to those without? Run the appropriate test at a=0.05.

	Group	Number of Children	Mean PEF	Std Dev PEF
	Chronic Bronchitis	25	281	68
	No Chronic Bronchitis	25	319	74

Step 1. Set up hypotheses and determine level of significance.
Ho:
H1:
alpha:

Step 2. Select the appropriate test statistic and give its formula.




Step 3. Set up decision rule.


Step 4. Compute the test statistic




Step 5. Conclusion.

Jun 10, 2022

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*PLEASE show in excel A different investigator conducts a second study to investigate whether there is a difference in mean PEF in children with chronic bronchitis as compared to those without. Data...

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