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4. SAT scores are normally distributed with mean 1500 and standard deviation 300.ROUND YOUR ANSWERS TO...

4. SAT scores are normally distributed with mean 1500 and standard deviation 300.ROUND YOUR ANSWERS TO 4 DECIMAL PLACES

a. If 100 SAT scores are randomly selected, find the probability that they have a mean less than 1450.___________Q14

b. If 64 SAT scores are randomly selected, find the probability that they have a mean greater than 1510.___________Q15

c. If 25 SAT scores are randomly selected, find the probability that they have a mean between 1525 and 1535.___________Q16

Math   Statistics-And-Probability   
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Answer #1

Probability calculation by z normal distribution.

(a). 0.0475

(b). 0.3936

(c). 0.0562

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