Help ASAP please

B

Bellavannesa

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Oct 10, 2020
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A certain standardized test's math scores have a bell-shaped distribution with a mean of 525 and a standard deviation of 114.

A)What percentage of standardized test scores is between 411 and 639?

B) what percentage of standardized test scores is less than 411 or greater than 639?

C) what percentage of standardized test scores is greater than 753?
 
Do you know what "bell shaped distribution" means? Do you know what a "normal distribution" is? Do you know what "mean" and "standard deviation" mean and how they help you with a normal distribution?

If not, you had better look them up!
 
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