Answer:
25
Step-by-step explanation:
If the mean of the temperatures in the chart is 24° with standard deviation of 4º, there has been 25 years within one standard deviation of the mean.
27° is the temperature value that is within one standard deviation of mean.
Mean is the average of the given numbers and is calculated by dividing the sum of given numbers by the total number of numbers.
Given
Mean of the temperatures in the chart [tex]\mu[/tex] [tex]\mew[/tex]= 24°
Standard deviation [tex]\sigma[/tex] = 4º
The lower and upper bound for temperature within one standard deviation of the mean is given as:
Lower bound = [tex]\mu[/tex] - [tex]\sigma[/tex] = 24° - 4º = 20°
Thus, the lower bound is = 20°
Upper bound = [tex]\mu[/tex] + [tex]\sigma[/tex] = 24° + 4º = 28°
Thus, the upper bound is = 28°
Now, the temperature value between (Lower bound, Upper bound) that is (20°, 28°) is said to be within one standard deviation of the mean.
Hence, 27° is the temperature value that is within one standard deviation of mean.
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