A quantitative data set of size 70 has mean 35 and standard deviation 5. At least how many observations lie between 25 and 45​?

Q: The data set has size 60. Approximately how many observations lie within three standard deviations…

A: From the empirical rule

Q: According to the Empirical rules rule, if there are 500 observations in a mound shaped data set the…

A: The empirical rule, also referred to as the three-sigma rule or 68-95-99.7 rule, is a statistical…

Q: A quantitative data set of size 70 has mean 25 and standard deviation 4. at least how many…

A: It is given that the mean is 25 and standard deviation is 4.

Q: A quantitative data set of size 150 has mean 35 and standard deviation 4. At least how many…

A:

Q: Consider a data set that has a mean of 17 and a standard deviation of 5.7. According to Chebyshev's…

A: Chebyshev's Theorem: Let X be an integrable random variable with finite expected value μ and finite…

Q: "For a population with a mean = 375 and a standard deviation = 25, what is the X value corresponding…

A: From the provided information, Mean (µ) = 375 Standard deviation (σ) = 25 X~N (375, 25)

Q: The data set has 250 observations and has mean 100 and standard deviation 16. Approximately how many…

A:

Q: A quantitative data set of size 200 has mean 20 and standard deviation 4. At least how many…

A:

Q: A quantitative data set of size 80 has mean 30 and standard deviation 5. At least how many…

A: Given information- Sample size, n = 80 Mean, μ = 30 Standard deviation, σ = 5 We have to find the…

Q: A quantitative data set of size 80 has mean 35 and standard deviation 33. At least how many…

A: It is given that the mean and standard deviation of the quantitate data set are 35 and 33,…

Q: In a population with mean 50 what standard deviation score would have a score of X=45

A:

Q: A quantitative data set of size 60 has mean 45 in standard deviation six. Approximately how many…

A: Given observation Sample size = 60 Mean = 45 Standard deviation = 6 finding the value of z

Q: A quantitative data set of size 70 has mean 25 and standard deviation 33. At least how many…

A: It is given that the mean and standard deviation of the data set are 25 and 33, respectively. The…

Q: The distribution of heights of men is approximately Normal with mean 69.269.2 inches and standard…

A:

Q: A distribution is given as X ~ U(0, 12). What is the theoretical standard deviation?

A: concepts and reasonuniform distribution is a continuous probability distribution.it is defined…

Q: The weights of 1,000 children average 50kg and the standard deviation is 5kg. How many children…

A: Given  mu=50, sigma=sd=5, n=1000 We want to find How many children weigh between 40kg and 55 kg?

Q: A quantitative data set has size 40. At least how many observations lie within two standard…

A: Introduction: Suppose X is a random variable with expectation, μ and standard deviation, σ. Then,…

Q: the data set has a size 50, how many observations lie within 2 standard deviations of the mean

A: From the provided information, Sample size (n) = 50 The observations lie within 2 standard…

Q: The data set has size 50. Approximately how many observations lie within one standard deviation to…

A:

Q: A quantitative data set of size 87 has mean 80 and standard deviation 10. At least how many…

A: To obtain standard deviation distance from mean to 100,

Q: Apply Chebyshev’s rule to solve. A quantitative data set of size 150 has mean 35 and standard…

A: Chebyshev’s rule: The Chebyshev’s rule states that, for any quantitative data set and any real…

Q: If the mean is 8, then the mean absolute deviation of the scores 10 9 3 8 10 is?

A: Given mean (μ) = 8 Then Mean Absolute Deviation is given by  1n∑xi-μ

Q: A quantitative data set of size 80 has mean 45 and standard deviation 2. Approximately how many…

A: The given values are, The formula for calculating the value of k is, The values of k are,

Q: A set of data items is normally distributed with a mean of 60. Convert the data item to a z -score,…

A: Solution: z-score for given data item is 1.

Q: A quantitative data set of size 80 has mean 30 and standard deviation 6. Approximately how many…

A: From the provided information, Population size (N) = 80 Mean (µ) = 30 Standard deviation (σ) = 6 X~N…

Q: Apply Chebyshev’s rule to solve. A quantitative data set of size 80 has mean 30 and standard…

A:

Q: A given distribution has a population mean, μ, of 139 and a population standard deviation, σ, of 15.…

A: Given data, Mean( μ)=139 sd( σ)=15 If x=81 z=?

Q: The distribution of heights of men is approximately Normal with a mean of 69.2 inches and a standard…

A: Given information- Population mean, µ = 69.2 inches Population standard deviation, σ = 2.5 inches We…

Q: The data set has 80 observations and has mean 30 and standard deviation 5. Approximately how many…

A:

Q: The data set has 150 observations and has mean 35 and standard deviation 4. Approximately how many…

A:

Q: The data set has size 90. Approximately how many observations lie within two standard deviations…

A: The Empirical Rule states that 99.7% of data observed following a normal distribution lies within 3…

Q: The data set has 200 observations and has mean 20 and standard deviation 4. Approximately how many…

A: It is given that the mean is 20 and the standard deviation is 4.

Q: The data set has size 40. Approximately how many observations lie within two standard deviations to…

A: 68-95-99.7-rule: Let X be an observation from a normal distribution, having mean µ and standard…

Q: The weights of tablets are normally distributed with mean 254 mg and standard deviation 4 mg.  If…

A: We have given that,  X be the random variable from normal distribution with mean (μ)= 254 and…

Q: A quantitative data set has mean 15 and standard deviation 2. At least what percentage of the…

A: It is given that the mean is 15 and standard deviation is 2.

Q: A normally distributed data set has a mean of 0 and a standard deviation of 2. What is the percent…

A: Here I am providing my handwritten solution

Q: Both sets of values have an average of 13.  Is Set A's standard deviation smaller, larger, or about…

A: deviations from mean are more for set A 1-13, 2-13, 3-13, 23-13, 24-13, 25-13, -12, -11, -10, 11, 12…

Q: What is the best approximation of the standard deviation ofthe measures -4, -3.0, 8, and 9?

A: Solution: Let X be the measure. The given data is –4, –3, 8 and 9.

Q: The data set of size 40 has mean 15 and standard deviation 2. Approximately how many observations…

A: Given Information Mean (µ) = 15 Standard deviation (σ) = 2 Finding the probability for scores that…

Q: A quantitative data set of size 60 has mean 50 and standard deviation 66. Approximately how many…

A: If the distribution is bell shaped, the Empirical Rule can be used. The Empirical rule provides the…

Q: A quantitative data set has size 60. At least how many observations lie within three standard…

A:

Q: According to Chebyshev's Teorem, at least what percentage of snake lengths are within K= 2.9…

A: The Chebyshev’s rule states that, for any quantitative data set and any real number greater than k,…

Q: A person in the U.S. eats about 25 pounds of M&M's per year with a standard deviation of 3 pounds.…

A: Assume that a person in the U.S. eats of M&M's per year follow normal distribution. μ=25σ=3 Let…

Q: If the coefficient of variation for a data is given as  35%, and the standard deviation for the same…

A: Given that Coefficient of variation, C.V =  35% And the standard deviation is SD = 32

Q: The data set has mean 15 and standard deviation 2. Approximately what percentage of the observations…

A:

Q: a quantitative data set has mean 25 and standard deviation 5. what percentage of the observations…

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: The data set has size 80. Approximately how many observations lie within two standard deviations to…

A: Empirical rule: On a normal distribution about 68% of data will be within one standard deviation of…

Q: The weights of tablets are normally distributed with mean 254 mg and standard deviation 4 mg.…

A: Given that  The weights of tablets are normally distributed with mean 254 mg and standard deviation…