The temperature of earth may be measured either by thermometers on the ground, w

Question

The temperature of earth may be measured either by thermometers on the ground, which is an accurate but tedious method, or by Sensors mounted in a space satellite, which is a less accurate method. A study tests the theory that the satellite based method overestimates temperature. Researchers selected 16 sites and measured the difference in temperature (in Fahrenheit) by both methods and found the mean difference to be 0.3863. They also found that the average temperature is 56.3337 using satellite but only 55.9474 using ground based method. Assume all conditions are met. t Test Satellite-Ground Assuming unequal variances Difference 0.38626 t Ratio 1.740943 29.33297 Std Err Diff 0.22187 DF Upper CL Dif 0.83980 Prob It 0.0922 Lower CL Dif -0.06729 Prob t 0.0461 Confidence 0.95 Prob k t 0.9539 -0.8 0A 0.0 0.2 0A 0.6 0.8

Explanation / Answer

4) option d is correct

5)correct p value is 0.0546 as it is right tailed test

option d is correct

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