A normal distribution has a mean of 150 and a standard deviation of 50. Calculate the probability we randomly select a number less than 140. (Round to the hundredths).

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A: From the graph we see that between 345 and 355 the probabilities are 0.34 and 0.34 To find the…

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Q: The mean of a normal probability distribution is 120 the standard deviation is 10. About what…

A:

Q: A class distribution is normal with mean of 75 and a standard deviation of 10. Find the following…

A: Given : Mean = μ = 75 Standard deviation = σ = 10

Q: The mean of a normal probability distribution is 120 the standard deviation is 10. About what…

A:

Q: The height of Christmas trees are normally distributed. The standard deviation of Christmas trees is…

A: Given: μ=1250 and σ=200   The z is calculated asz=x-μσ

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Q: The mean number of eggs that a person consumes per year is 293.6 pieces. Assume that the standard…

A: The number of egg consume are normally distributed with a mean 293.6 and a standard deviation of…

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Q: A normal distribution has a mean of μ =64 and a standard deviation of σ = 8. What is the probability…

A:

Q: Given a normal distribution with a mean of 150 and a standard deviation of 10, what is the…

A: Let X be a continuous random variable is normally​ distributed with a mean of 150 and a standard…

Q: Bryse is 27 years old. Based on a normal distribution with mean 47.8 years and standard deviation…

A: GivenBryse is 27 years oldx=27Mean(μ)=47.8standard deviation(σ)=12.6

Q: A class distribution is normal with mean of 75 and a standard deviation of 10. Find the following…

A:

Q: If the scores follow normal distribution with a mean of 120, a standard deviation of 10, find…

A: Solution

Q: Find the indicated probability. The lengths of humpback whales' pregnancies are normally…

A: x = length of human pregnancies Mean μ = 330 standard deviation (σ) = 25

Q: you have a normal distribution with a mean of 930 and a standard deviation of 130 and 20 were…

A: It is given that the scores follows normal distribution with mean 930 and standard deviation 130.…

Q: A normal distribution has a mean of 76 and a standard deviation of Determine the z-score for the…

A: Solution

Q: A normal distribution has a mean of μ =72 and a standard deviation of σ = 8. What is the probability…

A: Given, μ=72σ=8n=36M=x=72

Q: The speed of fastballs follows a Normal distribution with mean μ = 92 mph and a standard deviation…

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Q: If the scores follow normal distribution with the mean of 84 and a standard deviation of 7, find…

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Q: The mean of a normal distribution is 400 pounds. The standard deviation is 10 pounds. What is the…

A: The mean is 400 and the standard deviation is 10.

Q: In a normal distribution, mean is 60 and standard deviation is 5. How many of the cases have scores…

A: The probability between two specific numbers a and b in a normal distribution with mean μ and…

Q: The length of time it takes college students to find a parking spot in the library parking lot…

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Q: The average grade for an exam is 74, the standard deviation is 7 and the grades are curved to follow…

A: The z-score is obtained by the formula: , where x=data pointμ=meanσ=standard deviation   Given:…

Q: A normal distribution has a mean of 150 and a standard deviation of 50. Calculate the probability we…

A: Mean = 150 Standard deviation = 100

Q: The mean number of eggs that a person consumes per year is 293.6 pieces. Assume that the standard…

A:

Q: A normal distribution has a mean of μ= 54 and a standard deviation of σ=6 What is the probability of…

A: The sample size is, n = 36 The values of mean and standard deviation of the sampling distribution…

Q: For a normal distribution, find the probability that falls within 0.47 standard deviations of the…

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Q: The length of time it takes college students to find a parking spot in the library parking lot…

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Q: The average number of liters of fresh milk that a person consumes in a month is 18 liters. Assume…

A: The z-score is for sample is calculated asz=M-μσ/n

Q: An elevator has a weight capacity of 2000 pounds. Assume the weights of us men have a mean of 190…

A: The probability the elevator will be over capacity is obtained below:From the given information X…

Q: The amount of coffee in a can has a mean of 350g. The standard deviation is 5g. Use the normal…

A:

Q: The mean of a normal probability distribution is 600; the standard deviation is 20. About 95% of…

A: GivenMean(μ)=600standard deviation(σ)=20

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Q: The average score of 100 students taking a statistics final was 78 with a standard deviation of 7.…

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Q: Given a distribution with a mean of 117 and standard deviation of 42. find a value with a 7-score of…

A:

Q: A normal distribution has a mean of μ =72 and a standard deviation of σ = 8. What is the probability…

A: The formula for z-score for sample is, Z=M-μσn In the formula, M is the sample mean, μ is the…

Q: The diameter of an electric cable is normally distributed, with a mean of 0.8 inch and a standard…

A:

Q: The length of time it takes college students to find a parking spot in the library parking lot…

A:

Q: A normal distribution has a mean of μ= 54 and a standard deviation of σ=6 What is the probability of…

A: A normal distribution has a mean of μ= 54 and a standard deviation of σ=6. Sample size, n = 4

Q: The scores on a test for children in an eighth-grade class is normally distributed with a mean of 73…

A: Let X is the score on a test for children in an eighth-grade class. X~Normalμ=73,σ=5.7

Q: The duration of a lunch break for one employee at a manufacturing company follows a normal…

A:

Q: The mean of a normal probability distribution is 120 the standard deviation is 10. About what…

A: GivenMean(μ)=120standard deviation(σ)=10

Q: A normal distribution has a mean of 103 and a standard deviation of 3. Find the z-score for a data…

A: Solution: From the given information, µ=103 and σ=3.

Q: In a normal distribution, it is found that the mean is 56 and the standard deviation is 5, Find the…

A: We want to find the range of the values

Q: The random variable X has a uniform distribution with values between 13 and 21. What is the mean?…

A: Given,A random variable X~U(a=13 , b=21)f(x)=1b-a; a≤x≤bf(x)=121-13f(x)=18  ;  13≤x≤21

Q: A normal distribution has a mean of 150 and a standard deviation of 50. Calculate the probability we…

A: According to the given information, we have The distribution is normal. Mean = 150 Standard…