Suppose you are conducting a survey regarding illicit drug use among teenagers in some school district. you obtain a cluster sample of 12 schools within the district and sample all sophomore students in the randomly selected schools. they survey is administered by the teachers. this survey has bias.
(a) what is the type of bias?
a. response bias
b. sampling bias
c. nonresponse bias
(b) what is a possible remedy?
a. use systematic random sampling.
b. conduct face-to-face or telephone interview.
c. maybe perform the polling by professional social workers.

Which statement is true about common childhood infectious disease? a. children should always be given antibiotics to treat an infectious illness. b. frequency of infectious illnesses usually increases as children grow older. c. having a minor infectious illness weakens a child's immune system. d. infectious illnesses are usually mild and require no medication.

Um yea this might be weird to say up here but me and my girl got freaky and shoved a bottle up my but thole and now is stuck. so what do i do?

What is the main structural difference between enveloped and nonenveloped viruses? a) enveloped viruses have their genetic material enclosed by a layer made only of protein.b) nonenveloped viruses have only a phospholipid membrane, while enveloped viruses have two membranes, the other one being a protein capsid.c) enveloped viruses have a phospholipid membrane outside their capsid, whereas nonenveloped viruses do not have a phospholipid membrane.d) both types of viruses have a capsid and phospholipid membrane; but in the nonenveloped virus the genetic material is between these two membranes, while in the enveloped virus the genetic material is inside both membranes.