A certain standardized​ test's math scores have a​ bell-shaped distribution with a mean of 525 and a standard deviation of 105

105. Complete parts​ (a) through​ (c).

a ) What percentage of standardized test scores is between 210 and 840​?

b)What percentage of standardized test scores is less than 210 or greater than 840 ​?

c)What percentage of standardized test scores is greater than ​735?



Answer :