This Question: 10 pts 2 of 8 (0 complete) This Test: 80 pts possible Question Help A cellphone provider has the business objective of wanting to determine the proportion of subscribers who would upgrade to a new cellphone with improved features if it were made available at a substantially reduced cost. Data are collected from a random sample of 400 subscribers. The results indicate that 98 of the subscribers would upgrade to a new cellphone at a reduced cost. Reducing the price will be profitable if at least 20% of the subscribers would upgrade. Complete parts (a) and (b) below. a. At the 0.05 level of significance, is there evidence that more than 20% of the customers would upgrade to a new cellphone at a reduced cost? Determine the null hypothesis, Ho, and the alternative hypothesis, H1- O A. Ho: It = 0.20 OB. Ho: IS 0.20 H1: It # 0.20 H1: It > 0.20 O C. Ho: It # 0.20 O D. Ho: It 2 0.20 H1: It = 0.20 H1 : It