Previous research states, \"no evidence currently existssupporting or refuting the use of electric fans during heat waves\"in terms of mortality and illness. Counterintuitively, PublicHealth guidelines suggest not using fans during hot weather, withsome research reporting the potential of fans accelerating bodyheating.
You decide to research further this seemingly contradictoryguidance, hypothesizing that the true population averagecore body temperature amidst higher ambient temperatureand humidity levels while using an electric fan is greaterthan 95 degrees Fahrenheit (°F) and you set thelevel of significance at 10% for your formalhypothesis test. You randomly sample 10 participants based on yourresearch funding and for 45 minutes, the study participants sit ina chamber maintained at a temperature of 108°F (i.e., 42 degreesCelsius) and a relative humidity of 70%. After the first 45 minutewarming period, for each participant you place a personal sizedelectric fan 3 feet away with its airflow directed at a givenparticipant's chest area, and the participants relax in thisposition for the next 45 minutes. At the end of this 45 minute fanperiod, you record the core body temperature of all participants.The following table comprises the data you collect.
Subject | Core Body Temperature (°F) |
1 | 104.7 |
2 | 104.5 |
3 | 104.0 |
4 | 102.7 |
5 | 103.2 |
6 | 104.2 |
7 | 102.7 |
8 | 106.1 |
9 | 105.1 |
10 | 104.4 |
Per Step 4 of the 5-Steps to Hypothesis Testing, computethe test statistic using the appropriate test statisticformula.
Please note the following: 1) you may copy and paste the datainto Excel to facilitate analysis and 2) do not round yournumerical answer that you submit as the online grading system isdesigned to mark an answer correct if your response is within agiven range. In other words, the system does not take into accountrounding. On the other hand, rounding is preferable when formallyreporting your statistical results to colleagues.