University bookstores order books that instructors adopt for the courses. The number of copies order matches the projected the demand. However, at the end of the semester the bookstore has too many copies on hand and must return them to the publisher. THe bookstore has a policy that the proportion of books returned should be kept as small as possible. the average is supposed to be less Than 10% . To see whether the policy is working, a random sample of 30 book titles was drawn and the fraction of the total originally ordered that are returned Is recorded. The sample mean is 8.1% and the sample standard deviation is 3.7%. Find the P-value for that this hypothesis test.
Ha :y < 10%
Round p-values to four decimals and include the leading zero.