reddustVA

14.12.2021 • 

Mathematics

The grades of a science test are normally distributed. Thanh finds that his grade on the test has a z-score of â€""2. 5. Which statement must be true? Thanh’s grade is 2. 5 standard deviations below the mean of the test grades. Thanh’s grade is 2. 5 points below the mean of the test grades. Thanh’s grade is 2. 5 standard deviations above the mean of the test grades. Thanh’s grade is 2. 5 points above the mean of the test grades.

Ответ:

caden8233

24.04.2021

Mathematics

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3,437,000 people

2,254,000 times .035 = 78890 new people per year
78890 times 15 years= 1183350 new people in 15 years
2254000+1183350= 3437350 total people in 2015
rounded to the nearest 1000= 3,437,000

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