In a random sample of 68 people, 17 are classified as "successful."
a. Determine the sample proportion, p, of "successful" people.
b. If the population proportion is 0.70, determine the standard error of the proportion.
a. p=
(Type an integer or a decimal.)
(Round to four decimal places as needed.)

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.