The probability that a Poisson variate X takes a positive alue is 1- e-1.5. Find the variance and the probability that X es between -1.5 and 1.5.

Q: The time spent waiting in the line is approximately normally distributed. The mean waiting time is 6…

A: Solution

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard…

A:

Q: X is a normally distributed random variable with a standard deviation of 3.50. Find the mean of X…

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Q: A normal distribution has a mean of u = 100 with 0 = 20. If one score is randomly selected from this…

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Q: If X is a normal variate with mean 5 and variance 4. Find P ( -1.5 < X < 2)?

A: Given,mean(μ)=5standard deviation(σ)=2

Q: A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from…

A: Given that,The sample size is 25The confidence level is 0.98The sample meanThe sample standard…

Q: The type of battery in Jim's laptop has a lifetime (in years) which follows a Weibull distribution…

A: Given The type of battery in Jim's laptop has a lifetime (in years) which follows a Weibull…

Q: uppose X ~ N(11,0.5), and x = 10.5. Find and interpret the z-score of ne standardized normal random…

A: Given information:   X ~ N(μ, ?)   μ = 11, ? = 0.5, x = 10.5

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: Given, Mean = 0 Standard deviation = 1   The objective is to find the probability that a given score…

Q: suppose random variable x has a normal distribution with a mean of 10 and a variance of 16.…

A: Given that X follows a normal distribution with mean=10 and variance=16. So standard…

Q: David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use…

A:

Q: X is the Binomial Random Variable which counts the number of students who passed an exam. If the…

A: Given n=81 P=0.85

Q: Find the mean and standard deviation for the binomial distribution when p = 3/8 and n= 235.

A: Given p=3/8, n=235

Q: The life of light bulbs is distributed normally. The variance of the lifetime is 225and the mean…

A: The probability of a bulb lasting for at most 540 hours is calculated below:

Q: Our random variable X has a beta distribution with a = 7 and B = 3. %3D What is the variance of the…

A:

Q: If X is exponentially distributed with a mean of 3, can you find a uniform distribution U[a,b] with…

A: The provided information is as follows:The  is exponentially distributed with the mean 3..The mean…

Q: (a) Compute a 95% CI for µ (b) Compute a 99% CI for µ. (c) Which of the two intervals has bigger…

A: Xbar=20.1, n=50, variance(sigma^2)=10

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=100and a standard…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 20 Let X be a random variable…

Q: $12 O $4 Figure 1 - CDF of Amount Spent on a Meal at a Diner O $16 cdf $8 1.0 0.8 0.52 What is the…

A: Central tendency is a measure of a variable that clusters around a central value that represents the…

Q: 4. Suppose X1 is normally distributed with a mean of 3 and standard deviation of 0.3. Suppose X2 is…

A: It is given that X1~N(3,0.3) and X2~N(5,0.7). That is, E(X1)=3, SD(X1)=0.3 and E(X2)=5, SD(X2)=0.7.…

Q: The time spent waiting in the line is approximately normally distributed. The mean waiting time is 4…

A: Given that  μ=4σ=9

Q: The time spent waiting in the line is approximately normally distributed. The mean waiting time is 4…

A: According to the given information in this question We need to find the probability that a person…

Q: The lifetime X of a certain electronic component in hours is an exponential random variable with a…

A: It is given that, The lifetime X of a certain electronic component in hours is an exponential random…

Q: Assume that adults have IQ scores that are normally distributed with a mean of mμ=100 and a standard…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard…

A:

Q: Suppose X has a normal distribution with mean 80 and standard deviation 5. How many standard…

A: The mean is 80 and the standard deviation is 5.

Q: Symbol Company Price ($) Yield AT&T 33.59 5.48% VZ Verizon 46.78 4.70% CVX Chevron 112.18 3.82% MCD…

A: The data shows stocks with prices and yield.