Suppose that random variable X follows a normal distribution with mean 20 and standard deviation 10. Let Y-10-2x. If P(ksY<30)-0.4, the value of k is closest to O -25 O -17 O -21 O-19 O -23

Q: 1. Suppose that the amount of a drink in a can is a normal random variable with mean u = 300ml and…

A: We have given that  X~N(mu,sigma^2) mu=300, sigma =8 , sample size n=4 Z-score =(x - mu)/sigma

Q: Suppose that X is a normal random variable with a standard deviation of a =8. Ifwe know that Pr[X >…

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Q: If Y1, Y2, ... , Yn denote a random sample from the normal distribution with unknown mean u and…

A:

Q: Let the weights of 1 kg tea boxes filled with an automatic machine have a normal distribution with a…

A: Given data,Mean(μ)=1.03sd(σ)=0.02

Q: Assume the random variable X is normally distributed with a mean of μ=62 and a standard deviation of…

A: Given that.   X~N( μ , ?^2 )   μ=62     , ?=8     Z-score =( x - μ )/?

Q: 1. The nicotine content of a certain brand of king size cigarette has a normal distribution with a…

A:

Q: Find a value X0 of the random variable X that satisfies the following probability. P(X > X0)=0.025

A: here mean = 46 standard deviation = 5

Q: Suppose heights of seasonal pine saplings have an unknown distribution with mean 265 and standard…

A: Given, sample size (n) = 41 population mean (µ) = 265 Standard deviation (σ) = 18 sample mean (X)  =…

Q: Assume that blood pressure readings are normally distributed with mean of 125 and a standard…

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Q: Suppose X is normally distributed with mean 50 and standard deviation 4. Find the probability of P(μ…

A: Given, P(μ - 2.5σ ≤ X ≤ μ + 2.5σ)

Q: Assume that the heights of men are normally distributed with a mean of 70.9 inches and a standard…

A: We have to find given probability for mean greater than 71.9 inches.....

Q: Suppose heights of seasonal pine saplings have an unknown distribution with mean 265 and standard…

A: Given data,μ=265σ=18n=41P(X&lt;262.9)=?

Q: 1. The lengths of a particular species of worm are normally distributed with a mean of 21 cm and…

A: We have given that.   X~N( μ , ?^2 )   μ =21 , ? =1.5   Z-score =( x - μ )/?

Q: y definition, jumbo shrimp are those that require between 10 and 15 shrimp to make a pound. Suppose…

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Q: Suppose random variable X has a normal distribution with a mean of 98.2 and the standard deviation…

A: According to the given information, we have Mean = 98.2 Standard deviation = 3.2

Q: Jumbo shrimp are those that require 10 to 15 shrimp to make a pound. Suppose that the number of…

A: From the provided information, Mean (µ) = 12.5 Standard deviation (σ) = 1 X~N (12.5, 1) Here X be a…

Q: Suppose x is a normally distributed random variable with mean μ=88.09 and standard deviation…

A: Given that,  mean μ=88.09 and standard deviation σ=21.31  P(x&lt;55.65)=?  P(x&gt;138.14)=?…

Q: The weights of the fish in a certain lake are normally distributed with a mean of 13lbs and standard…

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

Q: What is the probability that the resulting sum is between 51,700kWh and 51,800kWh?

A: Solution: Given: Y: daily electricity use values having unknown distribution with mean = μy = 430…

Q: Suppose the random variable X follows a normal distribution with mean 8 and variance 25. Thus the…

A: Given, Mean μ = 8Variance σ2 = 25Standard deviation σ = Variance = 25 = 5

Q: Suppose the waiting time (in minutes) for cars in fuel station, X, is normally distributed with mean…

A: Let X denote the waiting times of car in fuel station and it follows normal distribution with mean…

Q: a population has a normal distribution with a mean of 50 and a stadnard deviation of 10. if a random…

A: Given,mean(μ)=50standard deviation(σ)=10sample size(n)=9

Q: The random variable X denotes the number of speed camera photos taken on a stretch of road. X is…

A: As per our guidelines we are suppose to answer only one question .  Given,A random variable…

Q: Let \(X) be a normally distributed random variable with a mean 550 and a standard deviation of 150.…

A: 4. The provided information is µ=550 σ=150   The z score is  z=x¯-µσz=600-550150z=0.33

Q: Suppose that the average monthly revenue of flower shops is $10,000 with a standard deviation of…

A: Givensample Mean(μ)=10000standard deviation(σ)=1575Sample size(n)=9

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

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Q: Suppose a random variable X is best described by a normal distribution with u=60 and o2=100 Find the…

A: Given data: Suppose = X is best described by a normal distribution μ =60 σ2 =100 Find the z-score…

Q: Suppose the random variable X had a population mean u=20 and a population standard deviation o=9. If…

A: Given that: X is normally Distributed with mean µ = 20.0 and standard deviation σ = 9.0 By using…

Q: A consumer survey indicates that the average household spends µ = 300 TL on heating per month during…

A:

Q: Suppose the random variable X has a population mean of u=20 and a population standard deviation o=9.…

A: Given Data Population Mean,μ = 20 Population Standard Deviation,σ = 9 sample size…

Q: Suppose a random variable X follows a Bernoulli distribution with parameter p = 0.6. Find its…

A: The formula to obtain the standard deviation of the Bernoulli distribution is, Where p is the…

Q: Let x be a normal random variable with a mean of 30 and a standard deviation of 4. Determine…

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Q: 7. Suppose that X has a discrete uniform distribution on the integers 0 through 5. Determine the…

A: X has a discrete uniform distribution, P(X = x) = 1/N : x = 0,1,2,3,4,5 N = 5

Q: Suppose the random variable X follows a normal distribution with mean 30 and variance 81. Then the…

A: Normal Distribution :  A normal distribution is the proper term for a probability bell curve. In a…

Q: Let x be a random variable that represents the weights in kilograms (kg) of healthy adult female…

A: Given Information:  Mean (u) = 62 kg  Standard Deviation (s) = 9 kg  Sample size (n) = 70  Sample…

Q: Suppose the random variable X follows a normal distribution with mean 70 and variance 100. Then the…

A: Correct answer is (C) -1 and 1

Q: Suppose the random variable X has a population mean u=20 and a population standard deviation o=9. If…

A:

Q: The probability that an individual has​ 20-20 vision is 0.16. In a class of 37 ​students, what is…

A: As per guideline expert have answer first question only dear student please upload other question…

Q: Suppose that random variable X follows a normal distribution with mean 20 and standard deviation 10.…

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Q: In a sample of n = 15 selected from an underlying normal distribution, we obtain standard deviation…

A: From the provided information, The sample standard deviation (s) = 10 Sample size (n) = 15

Q: In a certain normal distribution, the mean is 50. If an observation of 30 is randomly selected, the…

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Q: a normal distribution has a mean of u=60 with o=15.  if one score is randomly selected from the…

A: let "x" be the score.

Q: 1. The nicotine content of a certain brand of king size cigarette has a normal distribution with a…

A:

Q: 3. Let the weights of 1 kg tea boxes filled with an automatic machine have a normal distribution…

A: Let X be the random variable representing the weight of tea box. The mean and standard deviation is…

Q: Suppose the waiting time (in minutes) for cars in fuel station, X, is normally distributed with mean…

A: Given,   Mean = 10 Standard deviation = 5   The objective is to find the probability that a car…

Q: Suppose that the weights of adult males have a mean of 60kls and standard deviation of 18 kg.…

A:

Q: Suppose the random variableXfollows a normal distribution with mean 8 and variance 25. Thus the…

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Q: ose the population of all public Universities shows the annual parking fee per student is normally…

A: mean = 110 standard deviation = 18 P(100&lt;x&lt;115) = ?

Q: Let the random variable x have a normal distribution with a mean value of 70 and a variance of 25.…

A: Given data: Mean = 70 Variance = 25 To find: P (x &lt; 80 ) = ?