The following data represent the responses (Y for yes and N for no) from a sample of 20 college students to the question "Do you currently own shares in any stocks?" y y y n y n n n n n y n n y y y y n n y a

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The following data represent the responses (Y for yes and N for no) from a sample of 20 college students to the question "Do you currently own shares in any stocks?"

y y y n y n n n n n y n n y y y y n n y

a. Determine the sample proportion, p, of college students who own shares of stock.

b. If the population proportion is 0.30 , determine the standard error of the proportion.