For the probability distribution of X given below, find m. • Enter m as a decimal...
For the probability distribution given below find the expected value and the standard deviation. Round off your answers to one decimal place. x p(x) 0 0.038 1 0.087 2 0.129 3 0.285 4 0.461
Find the mean of this probability distribution. Round your
answer to one decimal place.
x P(x) 0 0.1 1 0.1 20.05 30.75 Find the mean of this probability distribution. Round your answer to one decimal place. Preview
The following table gives the probability distribution for a random variable X. x P(x) 2 0.008 3 0.076 4 0.264 5 0.412 6 0.240 a) Find the mean of X. (decimal answer, rounded 1 decimal place) b) Find the standard deviation of X. (decimal answer, rounded 3 decimal places) c) Find the probability that X is 2 or 3. (decimal answer, rounded 3 decimal places) d) Find the probability that X is at least 4.(decimal answer, rounded 3 decimal places)...
17. Consider the followin probability distribution listed below: 3 0.3 Find the mean of this probability distribution. Round to one decimal place, and place your answer below. 18. For a standard normal distribution (mean is 0 and standard deviation is 1), find P(-0.65 <1.12). Round to 4 decimal places, and list your answer below. You are conducting a study to see if the proportion of voters who prefer Candidate A is higher than 0.36 (a two-tailed test). The test statistic...
For a standard normal distribution, find: P(z < -0.85) Express the probability as a decimal rounded to 4 decimal places. . Incorrect Get help: VideoVideo Box 1: Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172 Enter DNE for Does Not Exist, oo for Infinity
Determine whether a probability distribution is given. If a probability distribution is given, find its mean. (Round to the nearest thousandth). If a probability distribution is not given, state (not a probability distribution). (Check your spelling!) x P(x) 0 0.658 1 0.287 2 0.050 3 0.004 4 0.001
1. X has a normal distribution with the given mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 41, σ = 20, find P(35 ≤ X ≤ 42) 2. Find the probability that a normal variable takes on values within 0.9 standard deviations of its mean. (Round your decimal to four decimal places.) 3. Suppose X is a normal random variable with mean μ = 100 and standard deviation σ = 10....
Assume the random
variable X has a binomial distribution with the given probability
of obtaining a success. Find the following probability, given the
number of trials and the probability of obtaining a success. Round
your answer to four decimal places.
P(X>2)P(X>2),
n=5n=5, p=0.4
success. Find the following probability, given the number of trials and the probability of obtaininga success. Round your answer to four decimal places. PX > 2), n 5, p = 0.4 Tables Keypad Answer How to enter...
The probability distribution of random variable X is given below. What is E[X]? X 4 2 6 P(x) 0.6 0.2 0.2 The probability distribution of random variable X is given below. What is σ2x? X 4 2 6 P(x) 0.6 0.2 0.2 The probability distribution of random variable X is given below. Let Y = 4X − 5 be a new random variable. What is σ2y? X 4 2 6 P(x) 0.6 0.2 0.2 The probability distribution of random variable...
The random variable x has the following discrete probability
distribution. Complete parts a through f
Question Help O The random variable x has the following discrete probability distribution. Complete parts a through f. P(x) 622 8 0.4 0.2 9 0.2 0.1 a. List the values x may assume. DODO. (Use ascending order.) b. What value of x is most probable? c. Display the probability distribution as a graph. Choose the correct graph below. OA. OB Oc. OD 071 LUH >...