Which one of these tend to overestimate true population parameter p?

Sandy is interested in determining how long bear cubs stay with their mother. She spends several years studying their behavior in Yellowstone Park noting date of birth, time of leaving mother, etc. for several bear families. This is an example of ________

a) the case study method. b) naturalistic observation. c) the survey method. d) the experimental method.

What did Erikson called the crisis of adolescence?

a. intimacy vs isolation b. identity vs role confusion c. generativity vs stagnation d. trust vs mistrust