Hi all, I have the answers, I just want to know How you dothis? SAT Math scores

Question

Hi all, I have the answers, I just want to know How you dothis?

SAT Math scores have a bell-shaped distribution with a mean of518 and a standard deviation of 114.

a) Write the above numerical values in symbolic form

µ=518  =114

b) What Percentage of SAT scores is between 404 and 632? Showthe chart.

518-114= 404 518+114= 632     68%

c) What percentage of SAT scores are less than 404 or greaterthan 632? Show the chart.

100% - 68% = 32%

d) What percentage of SAT scores are greater than 746?

518+2(114)    518+228= 746

e) About 95% of SAT score will be between what lengths?

518-2(114)     518-228= 290

Explanation / Answer

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