Morningstar publishes ratings data on 1208 company stocks. A sample of 40 of these stocks is listed here. Use the data set to answer the following questions.

a. What is the point estimate of the proportion of stocks that receive Morningstar's highest rating of 5 Stars.

b. What is the point estimate of the proportion of Morningstar stocks that are rated Above Average with respect to business risk?

c. Develop a point estimate of the proportion of the Morningstar stocks that are rated 2 Stars or less.

calculate on excel and show me functions if possible. below is the data and i used (--) for you to see the seperate columns

Morningstar --Rating Business Risk

3 Star-- Average

4 Star-- Average

2 Star-- Average

4 Star-- Above Average

4 Star Average

4 Star Below Average

3 Star Average

3 Star Above Average

2 Star Average

2 Star Below Average

4 Star Above Average

3 Star Average

3 Star Above Average

3 Star Average

4 Star Above Average

2 Star Average

3 Star Above Average

5 Star Average

2 Star Above Average

4 Star Average

4 Star Above Average

3 Star Average

4 Star Average

4 Star Average

4 Star Average

4 Star Above Average

3 Star Above Average

3 Star Above Average

1 Star Above Average

1 Star Above Average

3 Star Above Average

3 Star Above Average

5 Star Average

2 Star Average

3 Star Above Average

4 Star Average

4 Star Average

4 Star Above Average

4 Star Average 3 Star Average