Please show all your work Your friend is having a midcollege

Please show all your work

Your friend is having a mid-college crisis regarding her choice of majors. She is contemplating what kind of a job to seek after graduation. You\'ve found a website with normally distributed salaries for several occupations. In an effort to help your friend figure out her earning potential in a few public service careers, you need to determine the following:

a) Teachers earn an average of $37,550.The standard deviation is $6,340.What percentage of teachers earn $45,000 or more?

b) Policemen earn an average of $40,000.The standard deviation is $2,000.What percentage of policemen earn less than $35,000?

c) City engineers earn $60,000 on average, with a standard deviation of $8,000.What percent of engineers earn between $50,000 and $70,000?

Solution

1) 12%

2)0.62%

3) 89.43%