A hospital readmission is an episode when a patient who has been discharged from a hospital is readmitted again within a certain time period. Nationally the readmission rate for patients with pneumonia is 13%. A hospital was interested in knowing whether their readmission rate for pneumonia was less than the national percentage. They found 7 patients out of 60 treated for pneumonia in a two-month period were readmitted. Complete parts (a) through (d) below. a. What is E, the sample proportion of readmission? 6: 0.117 (Type an integer or a decimal. Round to three decimal places as needed.) b. Write the null and alternative hypotheses. Choose the correct answer below. Ho: p =0.13 and Ha: p0.13 Ho: p =0.1Sand Ha: p>0.13 V Ho: p =0.13 and Ha: p0.13 Ho: p >0.1Band Ha: p