Suppose the waiting time (in minutes) for cars in fuel station, X, is normally distributed with mean 10 and standard deviation 5. The probability that a car waits between 7 and 11 minutes is: O 0.9938 O 0.305 O 0.8413 None of these

Q: 1. Let X be a random variable that represents the wait time, in minutes, at a bank. Assume that X…

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Q: Suppose the total time to fill a routine prescription at a local pharmacy is 35 minutes based on the…

A: Given: μ=35σ=11 The probability that x is less than 46 minutes is obtained as below:…

Q: A small ferry runs every half hour from one side of a large river to the other. The number of cars X…

A: The objective of the question is to define the random variable M, which represents the money…

Q: Assume that blood pressure readings are normally distributed with a mean of 130 and a standard…

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Q: A company advertises that the batteries it sells is normally distributed with a mean life of 25…

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Q: Assume that blood pressure readings are normally distributed with a mean of 120 and a standard…

A: For an assumed sample mean,   Z=x¯-μσnx¯=sample meanμ=population meanσ=population standard…

Q: Let X be a normally distributed random variable with mean 410 and stan- dard deviation 2. Find the…

A: Introduction: Define X as the random variable of interest here. It is given that X has a normal…

Q: The probability that a person who exercises and eats well has a heart attack is predicted to be 0.5…

A: We know that if; Y~Binomial(n,p)Then the expected value of Y is;E(Y)=npand the standard deviation of…

Q: Let X be the number of successes in a fixed number of repeated trials and let p be the probability…

A: Let X be the number of successes in a fixed number of repeated trials and let p be the probability…

Q: Pacc Yao is a regular at a certain fast-food restaurant. Suppose the time X between the moment Pacc…

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

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Q: he mean daily production of a herd of cows is assumed to be normally distributed with a mean of 39…

A: Given data,μ=39σ=2.4

Q: The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 38…

A: Given data,normal distributionμ=38σ=8.7

Q: Assume that the heights of women are normally distributed with a mean of 63.6 inches and a standard…

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

Q: Let X be the time taken to assemble a car in a certain plant. X is a random variable having a normal…

A: Given that X~Normal distribution.  Where mean, mu= 30  And standard deviation, sigma = 4 We've to…

Q: Find the probability that a randomly selected adult has an IQ between 91 and 119.

A: Let X denote the IQ scores of the adults. Given that X follows N(mean = 105, SD = 15), then  Z = (X…

Q: Suppose that a college determines the following distribution for X=number of courses taken by a…

A: a) It is clear that sum of the probabilities should be equal to 1. That is, ∑iPxi=1. The probability…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 68 mph and…

A: X~N( μ , ?)μ=68     , ?=5Z-score =( x - μ )/?

Q: Let X denote the waiting time (in minutes) for a customer. An assistant manager claims that u, the…

A: Given, Population mean = μ = 2Standard deviation = σ = 2Sample size = n = 100Sample mean = x = 2.2…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 68 mph and…

A: X~N( μ , ?)μ=68   , ?=5Z-score =( x - μ )/?

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

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Q: Let x denote the time taken to run a road race. Suppose x is approximately normally distributed with…

A: If the distribution pattern of a given data set is normal, one can empirically determine the…

Q: The weights of pigs sold by a piggery farm are normally distributed with a mean of 100 kgs and a…

A: GivenMean(μ)=100standard deviation(σ)=12sample size(n)=64

Q: he probability that the standard normally distributed variable is between 1.011 and 2.8 is…

A: The objective is to find the probability that the standard normally distributed variable is between…

Q: The average yearly consumption of water per person in Lebanon is 120 liters with a standard…

A: Given data,μ=120P(X>200)=0.2296σ=?

Q: The average amount of time until a car accident on a particular 60 mile stretch of road is 30…

A: The average amount of time until a car accident is 30 minutes.

Q: In a population of statistics students it was found that the mean score on the final is 150 with a…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.