SAT scores are normally distributed, with a mean of 500 and a standard deviation of 100....

Question

Question

SAT scores are normally distributed, with a mean of 500 and a standard deviation of 100. Xiomara took the SAT and scored 650.

8) Based on this information, Xiomara’s score was equal to or higher than what percentage of the other students?

math Statistics-And-Probability

Answer 1

Answer #1

Solution :

Given that,

mean = = 500

standard deviation = =100

P(x >650 ) = 1 - P(x<650 )

= 1 - P[(x -) / < (650-500) / 100]

= 1 - P(z < 1.5)

Using z table

= 1 - 0.9332

=0.0668

answer=6.68%

Answer 2

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