Which group of subjects are least alike with regard to blood pressure? Do the tw

Question

Which group of subjects are least alike with regard to blood pressure?

Do the two groups have significantl different mean blood pressures? Yes or No

t-Test: Paired Two Sample for Means Diastolic_1_Grp2 Diastolic_2_Grp2 Mean 101.1481481 103.0740741 Variance 47.59259259 14.14814815 Observations 27 27 Pearson Correlation 0.078117495 Hypothesized Mean Difference 0 df 26 t Stat -1.317601115 P(T<=t) one-tail 0.099565157 t Critical one-tail 1.705617901 P(T<=t) two-tail 0.199130314 t Critical two-tail 2.055529418

Explanation / Answer

Which group of subjects are least alike with regard to blood pressure?

because these have a variance more small

Do the two groups have significantl different mean blood pressures? Yes or No

using the values of the table we have

t = -1.3176

t critical for 2 tailed is 2.05

IT IS 2 TAILED BECAUSE THE DIFFERENCE OF THE MEAN CAN BE

ONE CAN BE GREATER THAN THE OTHER

OR THE OTHER CAN BE GREATER THAN THE FIRST

so we are going to reject Ho ( mean are equals) if t < -2.05 or t > 2.05

CONCLUSION

we fail to reject Ho because t (-1.3176) is greater than critical value

t is between the critical values -2.05 < -1.3176 ( T VALUE) < 2.05

so our conclusion is that there is no difference between the mean blood pressures

Diastolic_2_Grp2

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