Application of the normal distribution

[tootsie]

The average charitable itemized per income tax return in Pennsylvania in$792. Suppose that the distribution of the contributions is normal with a standard deviation of $103. Find the limits for the middle 42% of contributions. Round z-value calculations and final answers to 2 decimal places. The lower and upper limits for the middle 42% of the contributions are respectively

 

[Harry_the_cat]

where are you stuck?

 

[Deleted member 4993]

The average charitable itemized per income tax return in Pennsylvania in$792. Suppose that the distribution of the contributions is normal with a standard deviation of $103. Find the limits for the middle 42% of contributions. Round z-value calculations and final answers to 2 decimal places. The lower and upper limits for the middle 42% of the contributions are respectively

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