A random variable has distribution B(10,p). A single observation is used to test H0: p=0.22 against H1: p is not equal to 0.22.
a) Using a 1% level of significance, find the critical region of this test. The probability in each tail should be as close as possible to 0.005.
I got two solutions but the answer given only gives the region where X is greater than 7. Why is there no solution in the lower tail?? I get there's no 'x' value where the P(B<=x)<0.005 but if the question states the probability should be as close to 0.005, then why is 0 not an answer?