Question: I am having issues with this one 1) Suppose that the scores on a statewide standardized test are normally distributed with a mean of 340

I am having issues with this one

1)Suppose that the scores on a statewide standardized test are normally distributed with a mean of 340 and a standard deviation of 15.

a)Estimate the percentage of scores that are between 310 and 355.

Answer:

b)Estimate the percentage of scores that are below 310.

Answer:

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