As part of a study, 10 mg of epinephrine was injected into the bloodstream of 10

Question

As part of a study, 10 mg of epinephrine was injected into the bloodstream of 10 resting, fasted adults. 10 minutes later, blood glucose levels of the subjects were measured. Here were the results: Subject Sex Age Blood Glucose (mg/dL) F=Female M=male

Subject-sex -age -Blood Glucose (mg/dL0

1) F 25 197

2) F 36 175

3) F 61 231

4) F 54 217

5) F 39 205

6) M 43 251

7) M 46 234

8) M 31 181

9) M 51 197

10) M 37 161

The Student t-Test The Student’s t-test can be used to test the null hypothesis that there is no difference in the blood glucose between females and males, or between over 40 and under 40 individuals. The Student’s t-test assumes that the values collected are normally distributed and that the variances are equal. A t statistic is calculated and then compared to a critical value of t (= tcrit) from statistical tables. Using Excel and the above data, perform a t-test to answer the questions.

9. Did the men have a significantly different glucose level after epinephrine injection than the women?

Explanation / Answer

Null hypothesis:

there is no difference in the blood glucose between females and males, or between over 40 and under 40 individuals

Alternative Hypothesis:

there is a difference in the blood glucose between females and males, or between over 40 and under 40 individuals

perform t test assuming equal variances;

data is

t=

0.010456453

p=

0.991913165

p>0.05

Fail totreject Null hypothesis

There is suffiicient statistical evidence at 5% level of sinificance to conlcude that  hat there is no difference in the blood glucose between females and males, or between over 40 and under 40 individuals. .

Females_BlodGlucose Males_Bloodglucose 197 251 175 234 231 181 217 197 205 161

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