4. A survey of 90 women who had recently given birth found 27 who experienced at least one episode of inter-partum or post-partum infection. Use this information to test the hypothesis the true percentage of women who experience at least one episode of inter-partum or post-partum infection is significantly different from 25%. (=0.05)

a. Are we testing for <, >, or ?

b. What is the population parameter p₀?

c. What is the value of the sample proportion p-hat?(You need to calculate this.)

d. Write the null and the alternate hypothesis: