Use the normal distribution of SAT critical reading scores for which the mean is 510 and the standard deviation is 119. Assume the variable x is normally distributed. (a) What percent of the SAT verbal scores are less than 625? (b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525?
Use the normal distribution of SAT critical reading scores for which the mean is 510 and the standard deviation is 119. Assume the variable x is normally distributed. (a) What percent of the SAT verbal scores are less than 625? (b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525?
A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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![Use the normal distribution of SAT critical reading scores for which the mean is 510 and the standard deviation is 119. Assume the variable x is normally distributed.
(a) What percent of the SAT verbal scores are less than 625?
(b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525?
(a) Approximately 83.14 % of the SAT verbal scores are less than 625.
(Round to two decimal places as needed.)
(b) You would expect that approximately 450 SAT verbal scores would be greater than 525. (Round to the nearest whole number as needed.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8bf6b83b-6550-42fc-bf16-8f02c15687e4%2Fc0e230c5-347b-45a7-8649-ccae81a9755f%2Fag4sus9_processed.png&w=3840&q=75)
Transcribed Image Text:Use the normal distribution of SAT critical reading scores for which the mean is 510 and the standard deviation is 119. Assume the variable x is normally distributed.
(a) What percent of the SAT verbal scores are less than 625?
(b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525?
(a) Approximately 83.14 % of the SAT verbal scores are less than 625.
(Round to two decimal places as needed.)
(b) You would expect that approximately 450 SAT verbal scores would be greater than 525. (Round to the nearest whole number as needed.)
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