To find the mean of each sample, we need to sum up all the temperatures in the sample and then divide by the number of temperatures.
For Sample 1:
Sum = 98 + 96 + 101 + 95 + 100 + 99 + 97 + 98 + 96 + 100 = 980
Mean = Sum / 10 = 980 / 10 = 98
For Sample 2:
Sum = 99 + 102 + 98 + 104 + 96 + 98 + 100 + 101 + 102 + 100 = 1000
Mean = Sum / 10 = 1000 / 10 = 100
The mean daily high temperature of Sample 1 is 98°F and the mean daily high temperature of Sample 2 is 100°F.
To find the difference in mean temperatures of the two samples, we can subtract the mean of Sample 1 from the mean of Sample 2:
100 - 98 = 2
Therefore, the mean daily high temperatures of the two samples differ by 2°F.
9. Camila wants to know the average daily high temperatures of Phoenix during the spring. She chose two random samples of 10 consecutive days and recorded the daily high temperatures. The daily high temperatures in Fahrenheit are as follows.
Sample 1: 98, 96, 101, 95, 100, 99, 97, 98, 96, 100 Sample 2: 99, 102, 98, 104, 96, 98, 100, 101, 102, 100
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The mean daily high temperature of Sample 1 is. The mean daily high temperature of Sample 2 is. The mean daily high temperatures of the two samples differ by
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