alexsk5559 alexsk5559

26-12-2019
Mathematics

contestada

The mean on a standardized test is 100 and the standard deviation is 35. Your score is 65. What percentage of the scores were higher than yours?

Respuesta :

Manetho Manetho

27-12-2019

Answer:

84.13%

Step-by-step explanation:

Given data:

mean μ= 100 and standard deviation= 35

P(x>65)=[tex]P(z>\frac{\mu-\sigma}{\sigma})[/tex]

putting vales we get

P(z>(65-100)/35)=P(z>-1) or P(z<1).,

from normal distribution table we get

P(z<1)= 0.8413= 84.13%

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