You take random sample of 200200people from Salinas and find that their average income is $48,000$48,000per year with a standard deviation of $9000$9000. Also assume that population incomes are normally distributed. Approximately how many people make between $39,000$39,000and $57,000$57,000?

Here is my answer, i'm sorry if you didn't understand my explanation

Just add 10+3m the m means the roman numeral m is often used to indicate one thousand, and mm is used to indicate one million. for example, an expense of $60,000 might appear as $60m. sales of $3,000,000 might be written as $3mm. internet advertisers are familiar with cpm which is the cost per thousand impressions. so 10+3m= 300,000,010hope this and if it does can i have brainlest? if not tell me what i did wrong but i’m pretty sure i am right.

3.) 100.5 cubic feet