1. Egress management believes that a normal distribution is a reasonable model for the unknowndemand in the coming year. What mean andstandard deviation should Egress use for thedemand distribution?

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A: 11. Empirical Rule: 68% of the values lies between one standard deviation from the mean. 95% of the…

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Q: If the mean and standard deviation of a population are 40 and 2, respectively and the sample size is…

A: Dear student, If you find this solution helpful please upvote ? it.

Q: If the mean of a Binomial distribution is 5, which is the most likely value for its standard…

A: Answer :- Mean of binomial Distribution  = np = 5 Standard Deviation of binomial Distribution =

Q: The shape of the distribution of the time required to get an oil change at a 20-minute oil-change…

A: Consider random variable x defines the tome to oil change.

Q: The shape of the distribution of the time required to get an oil change at a 10-minute oil-change…

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Q: Which describes a normal distribution with mean μ and variance o²?

A: here use basic of normal distribution curve

Q: In a Normal distribution 7% items are under 35 and 89% are under 63. Find its mean and standard…

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Q: 1. The owner of Britten's Egg Farm wants to estimate the mean number of eggs laid per chicken. A…

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Q: 2) The annual salaries of employees in a large company are approximately normally distributed with a…

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Q: 3. Why is a t-distribution generally more variable than a normal distribution?

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A: Solution: Let X be the time required to get an oil change at a 20-minute oil-change facility. From…

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Q: 4, The verbal part of the Graduate Record Exam (GRE) has a mean (u) of 500 and a standard deviation…

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Q: If the weights of 1,000 adult men in a county are plotted on a histogram, which curve is most likely…

A: For large n we use normal approximation.  And normal distribution shape is like bell.

Q: If 15 P(5) = AP(1) in Poisson's distribution, what is the mean?

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Q: 3. A line up for tickets to a local concert had an average (mean) waiting time of 20 minutes with a…

A: Formula : Z =(X - μ)/σ

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A: Hey there! Thank you for posting the question.  Since there are multiple questions posted, we will…

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Q: in a normal distribution with mean 3 and variance 49 What are the upper and lower scores for the…

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Q: 1. The results of a nationwide aptitude test in mathematics are normally distributed with mean = 63…

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A:

Q: On a normal distribution, at what percentage must a. The mean fall? b. The median fall? c. The…

A: Normal distribution, also known as the Gaussian distribution, is a probability distribution that is…

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A:

Q: The shape of the distribution of the time required to get an oil change at a 20-minute oil-change…

A: Solutions Given The shape of the distribution of the time required to get an oil change at a…

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Q: # 6- A set of data items is normally distributed with a mean of 90 and a standard deviation of 5.…

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Q: Could this curve represent a normal distribution?

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Q: In a normal distribution with mean 3 and variance 49, what are the upper and lower limit scores for…

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Q: If the standard deviation is 9, then what is the variance? 3.

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A:

Q: The shape of the distribution of the time required to get an oil change at a 20-minute oil-change…

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Continuous Probability Distributions

Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.

Normal Distribution

Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!