It should be noted that the sample mean of the difference in temperature will be -0.34.
From the information given, it should be noted that the difference in the temperatures given are -0.5, -0.6, -0.3, 0.1, -0.4.
It should be noted that d is the sample mean while s is the standard deviation.
Therefore, the sample mean of the difference in temperature will be:
= (-0.5 - 0.6 - 0.3 + 0.1 - 0.4)/5
= -1.7/5
= -0.34
The standard deviation of the difference in temperature will be 0.073.
Lastly, u represents the mean of the difference in body temperature at 8am and 12am of the population of all people.
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