Ultrasound was used to gather the accompanying corrosion data on the thickness of the floor plate of an aboveground tank used to store crude oil, each observation is the largest pit depth in the plate, expressed in milli-in. 98 40 52 94 55 115 60 70 75 85 125 85 90 92 94 95 125 100 90 Find 1-Mean 2-Median 3- standard deviation

Q: Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1.…

A: Let the score be denoted by X. Z score corresponding to bone density score can be calculated as…

Q: Cerebral blood flow (CBF) in the brains of healthy people is normally distributed with a mean of 74…

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Q: on a standardized exam, the scores are normally distributed with a mean of 21 and a standard…

A:

Q: Find the z-score for the value 69, when the mean is 96 snd the standard deviation is 5. z-score= ?

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Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: Score on a certain nation-wide college entrance examination follows a normal distribution with a…

A: Given Information: Mean μ=110 Standard deviation σ=60 To find the approximate percentage that a…

Q: How do we calculate standard deviation?

A: Standard Deviation A number that expresses how much the members of a group deviate from the group's…

Q: Assume that math test scores are normally distributed with a mean of 500 and a standard deviation of…

A:

Q: The distribution for the time a patient of a medical center spends waiting for an appointment is…

A: Define empirical rule first .  Empirical Rule :  The empirical rule, also referred to as the…

Q: What formula is used to find the standard error of mean?

A: we have to give correct formula to find standard error of mean.

Q: Scores on a history test have a get age of 55 with standard deviation of 10. What is the z-score for…

A: GivenMean(μ)=55standard deviation(σ)=10student earned score on test(x)=95

Q: The mean and variance of population with sample size is 100 is 20 and 4 respectively.Calculate the…

A:

Q: Describe about the Error Variability?

A: The element of variability is produced by factors, such as measurement imprecision, and is not…

Q: Change z-score (-2.00) into X value – Mean = 50, standard deviation = 10

A: Standard normal distribution: The standard normal distribution is a special case of the normal…

Q: Systolic  blood pressure values are approximately normally distributed with a mean of 100 mmHg and…

A: According to the given information, we have Systolic  blood pressure values are approximately…

Q: What would happen to the margin of error if the standard deviation were to decrease? it would…

A: We know that ,Margin of error=critical value ×standard deviation sample sizeMargin of error =Zα2 ×σn…

Q: What are the best ways to find the standard deviation?

A: Standard deviation is a measure of variability. It describes how far the data falls from the…

Q: A researcher wants to know the lifetime of a "BL" brand lamp. For necessity research, it takes 9…

A: Given : Population Mean life , μ = 1500 hrs Population standard deviation , σ = 111 hrs

Q: The scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A: The test score is 0.6 standard deviations above the mean is obtained below: From the given…

Q: Find z score  Xbar= 20 ,mean= 40 , standard deviation = 10

A: Given that Xbar= 20  mean= 40  standard deviation = 10 We have to find z score:

Q: Pulse rates of women have a normal distribution with a mean 75 and a standard deviation of 8. What…

A: Let "X" be the pulse rates of women.

Q: The lifespan of a certain light bulb in (hours) is a Normal model of (400,10)  What do the standard…

A: From the provided information, The lifespan of a certain light bulb follows Normal model (400, 10).

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: Mean =7, median =10, standard deviation =3 Find the coefficient of skewness (round to two decimals)

A: Answer: From the given data, mean = 7 median = 10  and standard deviation = 3

Q: Regression and correlation are used for estimation. Select one: True False

A: The most commonly used estimation techniques for investigating the relationship between two…

Q: Explain Mean of the Squared Deviations?

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Q: Mean=8, median =11, standard deviation = 5 Find the coefficient of skewness (round to two decimals)

A: Answer: From the given data, mean = 8 , median = 11  and standard deviation = 5