Question
The mean BMI in patients free of diabetes was reported as 28.2.The investigator conducting the studyhypothesizes that the BMI in patients free of diabetes is
The mean BMI in patients free of diabetes was reported as 28.2.The investigator conducting the studyhypothesizes that the BMI in patients free of diabetes is higher.Based on the data given below is there evidence that the BMI is significantly higher that 28.2?Use a 5% level of significance.
25 27 31 33 26 28 38 41 24 32 35 40
Critical t value:(2 points)
Computed t =(2 points)
Based on comparing the critical t value to the computed t value which of the following is (are) true?
a. There is statistically significant evidence at alpha=0.05 to show the BMI is significantly higher than 28.2.
b. There is notstatistically significant evidence at alpha=0.05 to show the BMI is significantly
higher that 28.2.
c. There are not enough data points to reach a conclusion.
d. b and c.
My answers:
Critical t value: 1.796 (because it's an upper tail not two tailed test correct?)
Computed t = 2.044
a. There is statistically significant evidence at alpha=0.05 to show
Are my answers correct?
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