Question 9 (1 point) An urn contains red balls and blue balls. Let p represent the proportion of red balls. We would like to test Ho : p = 0.5 We choose 10 balls at random with replacement and we reject the null hypothesis if there are less than 2 or more than 8 red balls in the sample. What is the probability of a Type II error if in fact p=0.3? Opbinom(7,10,0.3)-pbinom(2,10,0.3) Opbinom(8,10,0.3)-pbinom(2,10,0.3) Opbinom(8,10,0.3)-pbinom(1,10,0.3) Opbinom(7,10,0.3)-pbinom(1,10,0.3)