At a certain college, it is estimated that at most 20% of the students ride bicycles to class. Does this seem to be a valid estimate if, in a random sample of 87 college students, 21 are found to ride bicycles to class? Use a 0.10 level of significance. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. Let a success be a student that rides a bicycle to class. Identify the null and alternative hypotheses. O A. Ho: P = 0.2 B. Ho: P = 0.2 ( C. Ho- p=02 Hy : p = 0.2 Hy : p > 0.2 H1 : p =02 OD. Ho: P = 0.2 O E. Ho P= 0.2 OF Ho: P > 0.2 Hy: p # 0.2 Hyp Past experience indicates that the time required for high school seniors to complete a standardized test is a normal random variable with a standard deviation of 5 minutes. Test the hypothesis that G =5 against the alternative that o OB. X? > O c. X? =