Ans 14)
With reference to the table, the probability that there will be no earthquakes in the US is 0.5
OPTION D is correct
Ans 15)
The probability of at least 2 earthquakes meaning 2 or more earthquakes is 0.1
OPTION D is correct
The discrete probability distribution of X is shown below, where X represents the number of earthquakes...
In the probability distribution to the right, the random variable X represents the number of marriages an individual aged 15 years or older has been involved in. Complete parts (a) through (0) below 0 0.278 10.573 3 0.027 4 0.004 5 0.001 (a) Verify that this is a discrete probability distribution. This is a discrete probability distribution because theof the probabilities is (Type whole numbers. Use ascending order) (b) Draw a graph of the probability distribution Describe the shape of...
29. Determine if the following table represents a discrete probability distribution, where x represents the number of pizza toppings that a customer may order. x 0 1 2 3 4 P(x) 0.15 0.10 0.25 0.25 0.25 a) No, because Ex+1 b) No, because & p(x) #1 c) Yes, because p(x) = 1 d) Yes, because x = 1 30. Use the table on #29 and find the probability that a randomly select customer will ordered at most 1 toppings a).25...
The number of homes sold by a realtor during a month has the following probability distribution: Number Sold Probability 0 0.10 1 0.40 2 0.50 The standard deviation of the number of homes sold by the realtor during a month is the closest to _______. A) 0.44 B) 1.40 C) 0.66 D) 1.35 The standard deviation of the discrete random variable X is calculated as SD(X)=σ=σ2−−√.SD(X)=σ=σ2. The variance of the discrete random variable X is calculated as Var(X) = σ2=∑(xi–μ)2P(X=xi).
Discrete probability problems
0.2 pts Question 12 The table below is a discrete probability distribution in which x represents the number of tudents that a statistics tutor may see on any given day and Pix) represents the probability that the tutor sees that number of students. P(x) О.11 0.18 e.36 e.16 e.14 e.es What is the mean of this discrete probability distribution? (Round to the nearest hundredth.) Question 13 0.2 pts The table below is a discrete probability distribution in...
The probability distribution shown below represents the number of trips of five nights or more that American adults take per year. (That is, 6% do not take any trips lasting five nights or more, 70% take one trip lasting five nights or more, etc.). Number of Trips X Probability 0 0.06 1 0.70 2 0.20 3 0.03 4 0.01...
Discrete Random Variable. The random variable x has the discrete probability distribution shown here: x -2 -1 0 1 2 p(x) 0.1 0.15 0.4 0.3 0.05 Find P(-1<=x<=1) Find P(x<2) Find the expected value (mean) of this discrete random variable. Find the variance of this discrete random variable
In the following probability distribution, the random variable x represents the number of activities a parent of a 6 th- to 8th-grade student is involved in. Complete parts (a) through (f) below.x01234P(x)0.3670.1330.2090.1160.175(a) Verify that this is a discrete probability distribution.This is a discrete probability distribution because the sum of the probabilities is _______ and each probability is _______ (b) Graph the discrete probability distribution. Choose the correct graph below.(c) Compute and interpret the mean of the random variable x .The mean...
In the following probability distribution, the random variable x represents the number of activities a parent of a K to 5 th-grade student is involved in. Complete parts (a) through (f) below.x01234P(x)0.1670.1940.3440.1780.117(a) Verify that this is a discrete probability distribution.This is a discrete probability distribution because the sum of the probabilities is _______ and each probability is _______ (b) Graph the discrete probability distribution. Choose the correct graph below.(c) Compute and interpret the mean of the random variable x .The mean...
The following table denotes the probability distribution for a discrete random variable X. Use this information to answer questions 10-11. X .0 1 2 9 P(X) 0.1 0.2 0.2 0.5 10. Find the mean of X. 11. The standard deviation of X is closest to (a) 15.49 (b) 19:9 (c) 4,46 (d) 4.08 (e) 3.94
The following table represents the probability distribution of a discrete variable x. What is the value of the unknown probability P (3) X P(x) 0 0.12 0.05 1 2. 0.24 3 P(3) 0.18