Let x be a random variable with the following probability distribution 1 3 P(x) 0.3 0.4 0.1 k Find the expected value and the standard deviation for x. Select one: O a. 1.2 and 1.077 O b. 8.1 and 2.01 O c. 4.2 and 1.077 O d. 1.2 and 1.715

Q: Match the following: A probability distribution for a random variable X: -3 0 0.15 0.20 X P(X=x) ✓…

A: X-8-3-10146P(X=x)0.130.150.170.200.150.110.09

Q: Consider selecting a household at random in the rural area of a country. Define the random variable…

A: Given: xP(x)10.1420.17830.2240.2650.15260.02170.01980.00590.004100.001Total1

Q: Calculate the standard deviation for the following probability distribution: X 1 2 3 4 P(x) 0.15…

A: The probability distribution of random variable x is given.

Q: Consider the following probability distribution of the random variable x. 10 20 30 f(x) 0.30 0.40 ?…

A:

Q: Calculate the mean and standard deviation of the discrete probability distribution. 0 P(x) 0.027 X 1…

A: Mean(μ)=E(X)=∑X.P(X)E(X2)=∑X2.P(X)Variance(σ2)=E(X2)-E(X)2Standard deviation(σ)=E(X2)-E(X)2

Q: Let x be a random variable with the following probability distribution 2. 6. P(X) 0.3 0.2 0.3 k 0.1…

A:

Q: Consider the following probability distribution of the random variable x. f(x) 0.50 1 0.25 0.10 0.10…

A: Given probability at different point  P(X=0)= 0.50, P(X=1)=0.25, P(X=2)=0.10, P(X=3)=0.10,…

Q: Let x be a random variable with the following probability distribution 8 9 POX = x) = f (X) 1/12…

A: The total sum of the probabilities of the outcomes must be equal to 1. For this case, 1 =…

Q: The owner of a local movie theater keeps track of the number of tickets sold in each purchase and…

A:

Q: Let x be a random variable with the following probability distribution X 1 2 3 P(x) 0.3 k 0.1 0.2…

A:

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) -1 0.35…

A: Given data,   a)Expectation E(X)=? b)Variance V(X)=?

Q: Let x be a random variable with the following probability distribution 1 3 P(x) 0.3 k 0.1 0.2 Find…

A: Solution: 10. From the given information, the probability distribution of X is

Q: a. Find the expected value of each discrete probability distribution. 5. 7. 8. 10 P(x) 0.15 0.32…

A:

Q: Consider the following probability distribution of the random variable a. f(x) 0.34 1 0.22 0.17 0.10…

A: P(X≤2)= ?

Q: A random variable X follows normal distribution with the mean 5 and standard deviation 1. Find the…

A:

Q: Find the following probability for the standard normal random variable z. e. P(z 20) f. P(-2.54…

A: We have given that  X~N( 0 , 1)    μ = 0    , ? = 1   Z-score =( x - μ )/?   Note:-According to…

Q: A discrete random variable X is defined by the following probability distribution. Calculate the…

A: Given : X is probability distribution To find : Standard deviation

Q: Let the random variable Z have a standard normal distribution. Find each of the following…

A: Since, you have you have posted a question with multiple subparts we will solve first three subparts…

Q: let z be a random variable with a  normal distribution/ Find the indicated probability P(z<-0.13) a…

A:

Q: A random variable x has a standard normal probability distribution.  Which of the following…

A: Given that a random variable x has a standard normal probability distribution.

Q: The discrete random variable Xhas the probability distribution given by: 7 9. 12 13 15 P(X==) u/2…

A: Given: The probability distribution is, x 7 9 12 13 15 PX=x u2 0.05 0.35 u 0.15 The…

Q: (e) P(1.62 ≤ x ≤ a) = 0.24 a = 2.34

A:

Q: A normal probability table uses the standard normal curve to determine areas of probability by the…

A:

Q: Let x be a random variable with the following probability distribution 1 2 3 P(x) 0.1 0.4 0.2 k Find…

A:

Q: The probability distribution of a random variable X is given in the table below: -4 -2 4 .1 P(X = =)…

A: The probability at different values of x is given in the table of problem. The mean or expected…

Q: Let x be a random variable with the following probability distribution 2 4 P(x) 0.3 0.2 0.3 k 0.1…

A: answer the correct option is A a. 2.7 and 2.1

Q: The discrete random variable X has the following probability distribution: -10 0 10 p(x) 0.20 0.40…

A:

Q: Assume that the random variable X is normally distributed with mean μ = 120 and standard deviation o…

A: Mean==120Standard deviation==13

Q: randomly selected to gather data in the hours spent per week edule of STATPRO. The table below shows…

A: Solution

Q: Let X be a random variable with the following probability distribution: X -2 3 5 f(x) 0.5 0.2 0.3…

A: population mean : μ = E(x)

Q: Let X be a continuous random variable with uniform distribution, and with A = 36, B = 81. What is…

A: GivenA random variable X~U(36,81)f(x)=181-36f(x)=145    ;   36≤x≤81

Q: Let Z be a standard normal random variable. Calculate P(-1.064 < Z).

A: Given that Z follows standard normal distribution. Then we will use standard normal table to…

Q: Height (x) (in inches) 54 P(x) 1/23 1/23 5/23 4/23 7/23 4/23 1/23 Frequency 57 1 61 4 62 63 4 67…

A: Solution: Let X be the height in inches. From the given information, the probability distribution of…

Q: and x be a normal random variable wit andard deviation o= 8. Find the following probabilities and…

A: Given that.   X~N( μ , ?)   μ=15     , ?=8   NOTE:- According to bartleby guidelines expert can…

Q: Suppose X is a random variable with possible values -2,3 and 1 and with respective probabilities…

A: Given information, X -2 3 1 P(X) 0.22 0.35 0.43 Mean: X -2 3 1   P(X) 0.22 0.35 0.43…

Q: Let x be a random variable with the following probability distribution 2 4 P(x) 0.2 0.3 0.3 k 0.1…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.