Adrug researcher decides to test a new arthritis pain medication for safety and effectiveness on a treatment group of 100 severely disabled arthritis sufferers in a hospital ward. everyone in the group is assigned a number. patients with an even number receive the drug. patients with an odd number receive a placebo.

which of the following principles of experimental design are being followed?

check all that apply.

a. replication
b. blindness
c. blocking
d. randomization
e. lurking

Which statement best describes the polynomial

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?