A placebo bias is when a participant's behavior changes even when they are not receiving the experimental treatment. Next, explore sample and variables.
Answer:
The Fc region of immunoglobulin E becomes bound to mast cells and basophils and when immunoglobulin's paratopes bind to an antigen, it causes the cells to release histamine and other inflammatory mediators.
I think its the third one
Type II error is called false negative, that mean that you say the null hypothesis is right when it is not. In this case, the null hypothesis is "the drug is not safe". Then the error should be <span>to conclude the drug is safe when in, fact, it is unsafe</span>.