Find the probability that the value of the exponential random variable with mean rate of 3.2 will be having a value lower than 0.808
Q: The time it takes to develop a photographic print is a random variable with mean 17 seconds and…
A: If X has mean μ and standard deviation σ then X1= ∑x has mean nμ and standard deviation (√n)σ . Here…
Q: For a standardized psychology examination intended for psychology majors, the historical data show…
A: From the provided information, Mean (µ) = 505 Standard deviation (σ) = 180 Let X be a random…
Q: Suppose that the life expectancy of a certain brand of nondefective light bulbs is normally…
A: The problem provides us with the following values:Mean (μ) = 1100 hoursStandard deviation (σ) = 50…
Q: is a normal random variable with mean 20 and stadard deviation 50. Find the probability that 15
A: Answer the population mean = 20The population standard deviation = 50Using formula:P [A<Z<B] =…
Q: Suppose that in a large population of women (aged 20 to 29-years-old) that the mean serum…
A: Mean()=183standard deviation()=37sample size(n)=60
Q: A recent study shows that 18% of adults in the US do not use the Internet. Suppose that 12 adults…
A: Let , X be the number of adults in the US who do not use the internet. The random variable X follows…
Q: Find the probability that the mean of this sample will be more than 130 between 120 and 125 between…
A: It is given that: Population Mean =μ= 120 Standard deviation = σ=18 Sample size =n= 64 Sample…
Q: For a standardized psychology examination intended for psychology majors, the historical data show…
A: From the given information, Mean = 520 Standard deviation = 180 Sample size = 35 The objective…
Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…
A:
Q: For a standardized psychology examination intended for psychology majors, the historical data show…
A:
Q: For a standardized psychology examination intended for psychology majors, the historical data show…
A: Mean=M=500, Standard deviation=170, Sample size=n=40
Q: The time it takes to develop a photographic print is a random variable with mean 17 seconds and…
A: Mean = 17 s = 0.8 The sampling distribution of the total amount of time is ∑X ~N(nu,nσ) ∑X…
Q: For a standardized psychology examination intended for psychology majors, the historical data show…
A: Given: Mean μ = 500 Standard deviation σ = 170 Sample size n = 40 Sample mean X = 526 Formula used:…
Q: Suppose that the monthly incomes of all employees in Firm A are normally distributed with a mean of…
A: Given: Let us define the random variable X as the monthly income of employees in firm A. Mean = μ =…
Q: Suppose that a random sample of size 36 is to be selected from a population with mean 47 and…
A: Given that. X~N( μ , ?) μ=47 , ?=8 , n=36 Z-score =( x - μ )/?
Q: At a train station, there are 7 ticket vending machines. Customers waiting line to buy tickets from…
A: Given information: Number of Vending machines=c=7 Arrvival time=2 minutesλ=12 per minutes=12×60 per…
Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…
A: Let X denote the annual salary for graduates 10 years after graduation and it follows normal…
Q: For a standardized psychology examination intended for psychology majors, the historical data show…
A: From the provided information, Mean (µ) = 500 Standard deviation (σ) = 170 X~N (500, 170) Here X be…
Q: X is a normally distributed random variable with a mean of 22 and a standard deviation of 5. The…
A: According to the given information in this question We need to find the following probability
Q: For a standardized psychology examination intended for psychology majors, the historical data show…
A:
Q: Suppose the amount of time that a certain battery functions is a normal random variable with a mean…
A: Given: Population mean time μ=400 Population standard deviation σ=40 Xi ~N (400, 402) X1 be the life…
Q: A random variable is normally distributed with a mean of μ = 50 and a standard deviation of σ = 5.…
A: Given Mean(μ)=50standard deviation(σ)=5
Q: Suppose that in a large population of women (aged 20 to 29-years-old) that the mean serum…
A: It is required to find the probability that a sample of 60 women aged 20 to 29-years-old from the…
Q: the life of a certain brand of car stereo is normally distributed with a mean of 5.2 years and a…
A: According to the given information in this question, we need to find the following probability
Q: Suppose that in a large population of women (aged 20 to 29-years-old) that the mean serum…
A: From the given information ,Population mean , 183Population standard deviation , 37sample size , n =…
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: The number of traffic accidents that occur on a particular stretch of road during a month follows a…
A: Given,The average no.of accidents in a month is 8.4so the average no.of accidents will occur in two…
Q: ading pr e probab r interme
A: The information provided in the question are as follows :- Population mean (μ)=500 Population…
Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…
A: Let X denote the annual salary for graduates 10 years after graduation and it follows normal…
Q: What is the expected value of an exponential randomvariable?
A: Exponential random variable. For a positive constant k>0, the exponential density function (with…
Q: Assume that adults have IQ scores that are normally distributed with a mean of mu equals 100 and a…
A:
Q: What is the probability that a shower will laast for more than 3 minutes . if a shower has already…
A: Given: Length of the shower is exponentially distributed with mean, 1θ=12
Q: Suppose times for the 100m sprint for the average person are unimodal and symmetric with mean 14…
A: Consider X be a random variable which follows normal distribution indicates average time in seconds.…
Q: The life (in months) of a certain computer component is exponentially distributed with mean 5. Find…
A:
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: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the s…
A: We have given that. X~N( μ , ?^2 ) μ = 165000 , ? = 45000 , n= 83 Z-score =( x - μ )/?
Q: The scores on a certain test are normally distributed with a mean score of 65 and a standard…
A: The random variable score follows normal distribution. The population mean is 65. The population…
Q: Suppose that the amount of time a machine produces an item is normally distributed with mean 4 hours…
A:
Q: The lifespan of EEL light bulbs is a random variable obeying a normal law. Lifetime average of these…
A: The lifespan of EEL light bulbs is a random variable obeying a normal law. The lifetimeaverage of…
Find the
Step by step
Solved in 2 steps with 3 images
- Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard deviation σ=20. Find the probability that a randomly selected adult has an IQ between 93 and 117.The time between calls to a computer technical support is exponentially distributed with a mean time between calls of 20 minutes. What is the probability that there are no calls within a 25-minute interval?Suppose that the mean number of radioactive particles crossing over a counter in 1 millisecond is 4. What is the likelihood that at least 4 particles enter the counter in a given millisecond?
- A random sample of n = 25 is selected from a normal population with mean = 107 and standard deviation = 13. Find the probability that the sample mean deviates from the population mean u = 107 by no more than 5. (Round your answer to four decimal places.)Delivery times for shipments from a central warehouse are exponentially distributed with a mean of 2.64 days. A random sample of 81 shipments are selected and their shipping times are observed. Find the probability that the average shipping time is less than 2.28 days.4. The time between calls to a plumbing supply business is exponentially distributed with a mean time between calls of 15 minutes. What is the probability that there are no calls within a 30-minute interval?
- The downtime per day for a certain computing facility has averaged 4.0 hours and a standard deviation of 1.98 for the last year. Find the probability that the average daily downtime for a period of 20 days is between 1 and 5 hours.An electrical firm manufactures light bulbs that have a length of life that is normally distributed with mean equal to 787 hours and a standard deviation of 41 hours. Find the probability that a bulb burns between 769 and 806 hours. 0.3228 0.33 0.6772 0.3473Suppose that a random sample of size 25 is to be selected from a population with mean 46 and standard deviation 8. What is the approximate probability that X will be more than .5 away from the population mean?
- For a standardized psychology examination intended for psychology majors, the historical data show that scores have a mean of 500 and a standard deviation of 170. The grading process of this year's exam has just begun. The average score of the 35exams graded so far is 512. What is the probability that a sample of 35 exams will have a mean score of 512 or more if the exam scores follow the same distribution as in the past? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.If X is a normal random variable with mean 20 and standard deviation 50. Find the probability that 15 < X < 45.If arrivals occur at a mean rate of 2.6 events per minute the exponential probability of waiting more than 1.5 minutes for the next arrival is is a .0202 or .0122 or .0535 or .2564
