Arandom sample of medical files is used to estimate the proportion p of all people who have blood type b.

(a) if you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p will be within a distance of 0.07 from p?
files

(b) answer part (a) if you use the preliminary estimate that about 13 out of 90 people have blood type b.
medical files

The graph of h(x)= |x-10| +6 is shown. on which interval is this graph increasing

Hii1977 cleaner shrimp are a species of shrimp that clean parasites from other organisms. fish allow the shrimp to eat the parasites in their mouth. the shrimp get a source of nutrition. the relationship between the shrimp and the fish is this association indicates that for the smaill aneser arecommensal,mutualistic,or parasitic for the begger one the anser are the shrimp and fish benefit each other , the shrimp harm the fish, or the fish do not benetit from the shrimp

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points