During the Ebola Virus Disease outbreak in West Africa, Port Health Officials used infrared thermometers to record the temperatures of airborne passengers at different airports. Many public health practitioners questioned the reliability of infrared thermometers in detecting abnormally high temperatures. Port Health officials conducted comparative measurements of temperature readings among ten randomly selected passengers using clinical thermometers and infrared thermometers in the same passengers simultaneously and found the mean difference to be 0.4 with a standard deviation of differences in temperature between infrared thermometers and clinical thermometers to be 0.22. Readings were in degrees Celsius. Assuming the results were normally distributed, test the claim that the infrared thermometer was more heat sensitive using a 0.05 significance level.

What is the value of the test statistic?

a. 5.75

b. 6.02

c. 8.66

d. 9.53