how would one solve this step by step?

Surveys of customers show that distribution of total amount spent for a couple including cruise fee, tax, insurance, cruise tourist spending, and on-board extra spending follows a normal distribution with a mean of $1,000 and a standard deviation of $100.

a. What percentage of the couples spend between $750 and $1,225? (hint=find the z-scores and use the z-tables in our course e-text)

how would I, Write my calculations and percentage in your Excel file.

Draw a normal curve and shade the desired area on your diagram (Excel or .jpg)

how would I, Write my calculations and percentage in your Excel file.

Draw a normal curve and shade the desired area on your diagram (Excel or .jpg)

how would I, Write my calculations and percentage in your Excel file.

Draw a normal curve and shade the desired area on your diagram (Excel or .jpg)