EPPS 2301: Methods of Quantitative Analysis in the Social and Policy Sciences Qu
ID: 3042384 • Letter: E
Question
EPPS 2301: Methods of Quantitative Analysis in the Social and Policy Sciences Quiz 2 To receive credit for answers that require calculations, you must show your work MULTIPLE CHOICE. Choose the one altemative that best completes the statement or answers the question, 1) True or False The expected value of a discrete probability distrbution may be negative. A) True B) False 2) 2) The sum of the probabilities of a discrete probability distribution must be A) less than or equal to zero. C) between zero and one. B) greater than one D) equal to one 3) A normal probability plot is a graph that plotsVersus 3) A) observed scores, normal data C) normal score, observed data B) normal data, observed scores D) observed data, normal scores SHORT ANSWER 4) Consider the discrete probability distribution to the right when answering the following 4) question. Find the probability that x equals 4. 5) From the probability distribution, find the mean and standard deviation for the random 5)_ variable x, which represents the number of bicycles per houschold in a town of 1000 households 0.428 3 10.108 4 0.083 MULTIPLE CHOICE. Choose the one altemative that best completes the statement or answers the question. 6) Assume that male and female births are equally likely and that the birth of any child does not 6) affect the probability of the gender of any other children. Find the probability of exactly eight girls in ten births. A) 0.8 C) 0.176 D) 0.08Explanation / Answer
Solution:-
a) True
b) option D) equal to one
c) option D) observed data ,normal scores
4) P(4) = 0.58
=> 0.04+0.07+0.31 + x = 1
x = 1-0.42
x = 0.58
5) mean = 1.596
=> (0.125*0)+(0.428*1)+(0.256*2)+(0.108*3)+(0.083*4) = 1.596
sd = 1.0976
6) option B) 0.044
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.