2. State two characteristics of a probability. 3. The normal distribution is sym

Question

2. State two characteristics of a probability. 3. The normal distribution is symmetrical. What 4. What type of distribution is most commonly 5. A normal distribution has a mean of 0 and a does this mean? applied to behavioral research? standard deviation of -1.0. Is this possible? Explain. Concept and Application Problems 11. A hypothetical population consists of eight individuals ages 13, 14, 17, 20, 21, 22, 24, and 30 years. lal What is the probability that a person in lb) What is the probability of selecting a par- lcl What is the probability of selecting a par- this population is a teenager? ticipant who is at least 20 years old? ticipant older than 30? 12. On the basis of statistics from the previous years, a maternity ward states that 97% of patients say they are satisfied with their birth- ing experience. If 100,000 patients gave birth in that maternity ward over the previous 3 years, then how many patients do we expect were not satisfied with their visit? 13 Using the unit normal table, find the propor- tion under the standard normal curve that lies tn tho right of each of the following:

Explanation / Answer

Q 11)

a) Event A - Person in the given population is teenager

Favorable Cases = { 13, 14, 17 }

Prob(A) = 3/8 =0.375

b) Event B- A participant who is atleast 20 years old

Favorable Cases = {20, 21 , 22, 24, 30 }

Prob.(B) = 5/8 =0.625

c) Event C - Participant older than 30

Favorable Cases = None = 0

Prob. (C) = 0

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