Can you help me with both plz

10. A lady wearing a United Nations outfit asks if you think people should be donating to the UN. This leads to which type of bias? a) non-response bias b) measurement bias c) response bias d) sampling bias 4.4 Collecting Primary Data - Observations and Experiments 11. In experimental study, the treatment group a) are not treated with a placebo b) is called the control group c) are always in control of the other groups d) they always represents 50% of the sample