1. A normal distribution has a mean of 54 and a standard deviation of 18. What is the median? (Enter an exact number as an integer, fraction, or decimal.)

Q: Assume that a distribution of 10000 scores is normally distributed with a mean of 90 and a standard…

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Q: The heights of women have a symmetric distribution with a mean of 64 inches and a standard deviation…

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Q: The table below gives the number of accidents each year at a particular road intersection: 2007 4…

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Q: The mean of a data set is 20 and the standard deviation is 2. What percentage of data value will…

A: Given  Mean=20, sigma=2 P(12<X<28)= ?

Q: The population standard deviation           a. is always the same as the sample standard deviation.…

A: Solution: The standard deviation explains the dispersion in the data. The population standard…

Q: (a) Compute the value of the correlation coefficient.

A: We have given Here are the number of grams of water and the number of grams of carbohydrates for a…

Q: a. Suppose a 15 to 18-year-old male from Chile was 176 cm tall from 2009 to 2010. The z-score when x…

A: Given that Let X denotes the height of a 15 to 18 year old male from Chile in 2009 to 2010 X~N(170,…

Q: Next c A variable is normally distributed with mean 12 and standard deviation 2. a. Find the…

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Q: 7. In the normal curve, a. the mean, median, and mode are all on the highest point of the curve. b.…

A: The objective is to identify the correct statement related to the mean, median, mode, and standard…

Q: Assume that a distribution of 10000 scores is normally distributed with a mean of 90 and a standard…

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Q: A set of data is normally distributed with a mean value of 229 and a standard deviation of 9.2. What…

A: Suppose the variable of interest is x.The random variable x follows normal distribution with mean…

Q: Given a mean of 24.5 and a standard deviation of 1.7, within how many standard deviations of the…

A: A mean of 24.5 and a standard deviation of 1.7

Q: Refer to the incomplete grouped frequency distribution below. Classes (Rand) 8.00 < 12.00 Frequency…

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Q: What information can you get from a person’s z-score? a. Whether they are above or below the mean b.…

A: Solution

Q: 2. A normal distribution has a mean of 100 and a standard deviation of 10. a. Sketch the graph of…

A: Given data: Mean =100 Standard deviation  = 10

Q: In a normal distribution, 99.7% of the data fall within how many standard deviations of the mean? A.…

A: Solution-: In a normal distribution, 99.7% of the data fall within how many standard deviations of…

Q: Determine whether the following graph can represent a variable with a normal distribution. Explain…

A: Given:

Q: Consider the 5 numbers: 12, 5, 8, 12, 18. Which of the following is FALSE? The standard deviation is…

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Q: A normal distribution has a mean of 52 and a standard deviation of 15. What is the median? (Enter an…

A: Here is given that, mean is 52 and standard deviation is 15. We will use z- standard normal…

Q: Private nonprofit four-year colleges charge, on average, $27,880 per year in tuition and fees. The…

A: Population mean, μ=27880 Population sd, σ=7500

Q: 1. A survey of 1000 women ages 20 to 30 found that their heights were normally distributed, with a…

A: GivenN=1000Mean(μ)=65standard deviation(σ)=2.5

Q: Show your work to find the value that is 1.5 standard deviations: a. above the mean. b. below the…

A: From the obtained results, the mean is 9.02 and the standard deviation is 5.7910.

Q: 19. Sketch a normal curve for the distribution. Label the x-axis values at one, two, and three…

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Q: Here are the foot lengths (in centimeters) for a random sample of 7 fourteen-year-olds from the…

A: Here, data is 25,22,20,25,24,24,28.

Q: a variable of a population has a mean of 73 and a standard deviation of 36. a. Identify the sampling…

A: Population mean =73Standard deviation =36We have to finda..The distribution of sample mean if sample…

Q: Find the mean deviation about mean of rectangular distribution,

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Q: A positively skewed population has a mean of ? = 100 and a standard deviation of ? = 15. a. What is…

A: Mean of , μ = 100 Standard deviation of , σ = 15   What is the mean of the distribution of sample…

Q: 3. Please show your work to find the mean and standard deviation of the data. Round to the nearest…

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Q: Two hundred pre-engineering students have their midterm grades in the statistics, assuming normally…

A: Given data: μ=2.2σ=0.6Normal distributionN=200n(2&lt;x&lt;2.5)=?

Q: iv. Find the average height of the club members. v. Calculate the standard deviation for the…

A: For the given data , We have to calculate average and standard deviation.

Q: Suppose final exam scores for a college class follow a Normal distribution with mean 80 and standard…

A: Mean()=80standard deviation()=5

Q: 1. A Statistics class of 50 students has a mean test score of 38 with standard deviation of 5. a.…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: The IQs of individuals form a normal distribution with mean = 100 and s = 15. A. What percentage of…

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Q: 2. In a departmental examination on statistics, the mean grade was 64 and the standard deviation was…

A: Determine the number of students took the examinations.   The number of students took the…

Q: Q.Discuss coefficient of mean deviation

A: Coefficient of mean deviation is defined as deviation of data values from mean.