vrundapatel2183
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A sample of n = 5 scores has a mean of M= 10. One new score is added to the sample, and the new mean is calculated to be M = 9. What is the value of the new score?
A) X=5 B X=55 C) X=4.5 D X=4 E)​

Respuesta :

adioabiola

The value of the new score in discuss according to the task content is; Choice D; X= 4.

What is the value of the new score?

According to the task content, it follows that the mean of the initial 5 scores was; M = 10.

Hence, the sum of all 5 scores is; 5 × 10 = 50.

Hence, upon addition of the sixth score, x the new mean is; M = 9.

Hence, the value of the new score can be determined as follows;

(50+x)/6 = 9

50 + x = 54

x = 54-50

x = 4.

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