A researcher records the number of mistakes made during a memory skills task. He finds that the probability that participants in this study made 0 mistakes is p = .22; made 1 mistake is p = .30; made 2 mistakes is p = .16; made 3 mistakes is p = .12; and made 4 or more mistakes is p = .25. Is this probability distribution accurate?
A. Yes, it distributes all possible outcomes for the random variable.
B. No, one of the outcomes is stated as “or more.”
C. No, the probability distribution does not sum to 1.0.
D. No, one of the outcomes is stated as “or more” and the probability distribution does not sum to 1.0.
Ans: C
You might also like to view...
Which of the children described below is likely to experience the most difficulty in school?
a. Mike, a 12-year-old who suffered a moderate hearing loss in one ear at age 5 b. Sarah, a 12-year-old who suffered a moderate hearing loss in both ears at age 5 c. Bill, a 12-year-old who suffered a severe hearing loss in both ears at age 2 d. Mary, a 12-year-old who was born with a severe hearing loss
The term ____________________ refers to striving to live up to a code of rules or moral values
Fill in the blank(s) with correct word
For the most effective whole-class and teacher-led discussion, the maximum recommended distance between participants is
(a) 25 feet (b) 6-8 feet (c) 10-12 feet (d) 15-18 feet (e) 8-12 inches
A p value that follows statistical tests refers to:
A) probability B) proof C) precision D) power