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Mr. Zuro finds the mean height of all 12 students in his statistics class to be 66.0 inches. Just as Mr. Zuro finishes explaining how to get the​ mean, Danielle walks in late. Danielle is 64.7 inches tall. What is the mean height of the 13 students in the​ class?

Respuesta :

frika

Answer:

65.9 inches

Step-by-step explanation:

The mean is is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are.

The mean height of all 12 students in the class is 66.0 inches. This means that the sum of the heights of 12 students is

[tex]66\cdot 12=792\ inches[/tex]

If Danielle is 64.7 inches tall, then the sum of the heights of all 13 students is

[tex]792+64.7=856.7\ inches[/tex]

and the mean height of all 13 students is

[tex]\dfrac{856.7}{13}=65.9\ inches[/tex]

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