A process is normally distributed. If the standard deviation is 4 and P(X> 20) = 0.05. Find the mean
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A: It is given that the values follow normal distribution with mean 205.3 and standard deviation 65.
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A: Given data: An economics professor decides to curve the grades of his class. In doing so, he decides…
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A: Given: A distribution of values is normal with μ=123.2 , σ=62
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A: The mean of the distribution is 14. The standard deviation of the distribution is 2.
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A: Using z-score table to calculating above. Z-score=(X-mean)/standard deviation
Q: Assume that a normal distribution of data has a mean of 12 and a standard deviation of 3. Use the…
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Q: Assume that a normal distribution of data has a mean of 12 and a standard deviation of 3. Use the…
A: Given:Mean = 12Standard deviation = 3We have to find the probability that a value lies above 15.
Q: The mean score on a dexterity test for 12-year-olds is 30. The standard deviation is 5. If a…
A: From the given information, let X be the score on a dexterity test for 12-year-old student. The mean…
Q: at one college, GPAs are normally distributed with a mean of 3.1 and a standard deviation of 0.4.…
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Q: The standard deviation of the certain distribution is 9, what is its variance?
A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…
Q: A normal population has a mean of 20.0 and a standard deviation of 4.0. Compute the z value…
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Q: A normal distribution has a mean of 126 and a standard deviation of 10. Find the z-score for a data…
A: The random variable X follows normal distribution. The population mean is 126 and population…
Q: A distribution of values is normal with a mean of 90 and a standard deviation of 5. Find the…
A: The provided information is µ=90 σ=5 P(-a<X<a)=0.02…
Q: A normal distribution has a mean of 100 and a standard deviation of 7. Find the z-score for a data…
A: The mean is 100 and standard deviation is 7.
Q: GPAs at CCSU are normally distributed with a mean of 2.43 and a standard deviation of 0.52. Find the…
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Q: Assume that a normal distribution of data has a mean of 18 and a standard deviation of 4 Use the…
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Q: a normal distribution has a mean 20 and standard deviation 5. what is the z score that corresponds…
A: A normal distribution has a mean=20, standard deviation =5.
Q: The mean score in a test is normally distributed with mean 30 and standard deviation 10. What is…
A: Given : Mean, μ = 30 standard deviation, σ = 10 x = 55
Q: A distribution of values is normal with a mean of 204.2 and a standard deviation of 39.2. Find P84,…
A: Given: A distribution of value is normal with mean of 204.2 A standard deviation of 39.2 It is…
Q: A normal distribution has a mean of 113 and a standard deviation of 6. Find the z-score for a data…
A: A normal distribution has a mean of 113 and a standard deviation of 6.
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: In a population, the variable Rain is normally distributed with a mean of 10 and a standard…
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Q: A normal distribution has a mean of 125 and a standard deviation of 3. Find the z-score for a data…
A: A normal distribution has a mean of 125 and a standard deviation of 3. mu
Q: If the coefficient of variation is 1% and the mean is 3.2, determine standard deviation (to four…
A: We have given that Mean(x̅) = 3.2 CV = 0.01
Q: The heights (in inches) of males in the United States are believed to be approximately Normally…
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Q: A normal distribution has a mean of 82 and a standard deviation of 3. Find the z-score for a data
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Q: Assume the random variable X is normally distributed with a mean of 50 and a standard deviation of…
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Q: A normal distribution has a mean of 20 and a standard deviation of 2. What is the z value of 17.5?
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Q: A normal distribution has a mean of 108 and a standard deviation of 6. Find the z-score for a data…
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Q: A normal distribution has a mean of 103 and a standard deviation of 7. Find the z-score for a data…
A: Given: μ =103 & σ=7 the z-score corresponding to 100 is Z=100-μσ =100-1037= - 0.43
Q: At one college, GPA’s are normally distributed with a mean of 3 and a standard deviation of 0.6.…
A: Given Information: Mean (u) = 3 Standard Deviation (s) = 0.6
Q: Draw the normal curve. Suppose that the amount of time it takes the Bureau of Internal Revenue…
A: Solution-: Given: μ=14,σ=1.5 We want to find x such that, P[X<x]=0.45
Q: A particular normal distribution has mean of 650 and standard deviation of 250. what is the…
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Q: A distribution of values is normal with a mean of 71.8 and a standard deviation of 27.6. Find P12,…
A: The provided information are: Population mean μ=71.8 Population standard deviation σ=27.6
Q: For a normally distributed random varible y, mean is 25 and standard deviation is 9. Find the z…
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Q: The lengths of metal bolts are normally distributed with mean μ cm and standard deviation 7 cm. If…
A: Let X be the random variable from normal distribution with mean μ and standard deviation (σ) = 2.5…
Q: Suppose X, the grade on a midterm exam, is normally distributed with mean 80 and standard deviation…
A: Given information- Population mean, μ = 80 Population standard deviation, σ = 10 Suppose X is the…
Q: Suppose that blood chloride concentration (denoted by X) (mmol/L) has a normal distribution with…
A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…
Q: Scores on a test are normally distributed with a mean of 64 and a standard deviation of 10.8. Find…
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Q: A normal distribution has a mean of 117 and a standard deviation of 4. Find the z-score for a data…
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Q: what is the lowest possible Score for the student to get a mark of A.
A: Let , X→N(μ=74 , σ=7) Our aim is to find the lowest possible Score for the student to get a mark of…
Q: the maximum value of a distribution is 47.5 and the minimum value is 4.0 what is the estimated…
A: Given : Lower limit,a = 4 Upper limit,b = 47.5
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: A normal distribution has a mean of μ = 50 and a standard deviation of σ =12. Find the proportion of…
A: Given data, μ = 50 σ =12. P(X=53)=?
Q: A normal distribution has a mean of 108 and a standard deviation of 5. Find the z-score for a data…
A: Given, Mean, μ=108 Standard deviation, σ=5 z-score for a data x is calculated by using the formula…
Q: A normal distribution has a mean of 136 and a standard deviation of 10. Find the z-score for a data…
A: Given information- Population mean, µ = 136 Population standard deviation, σ = 10 We have to find…
Q: The mean score on a standard exam is 320 with a standard deviation of 40. Suppose 100scores are…
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Q: A normal distribution has a mean of 75 and a standard deviation of 7. Find the z-score for a data…
A: Given problem Given that A normal distribution has a mean of 75 Standard deviation of 7. The…
Q: at one college, GPAs are normally distributed with a mean of 3.1 and a standard deviation of 0.4.…
A: Let "X" be the GPA of college students. According to the empirical rule [Also known as 68-95-99.7…
Q: Could you please highlight the correct answer. and explain it
A: Given that, Mean: 16.2 Standard deviation: 4.9 Calculate z-score for 22.
Pls help ASAP ASAP.
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