A quantitative data set of size 70 has mean 25 and standard deviation 4. at least how many observations lie between 13 and 37
Q: The data set has size 60. Approximately how many observations lie within three standard deviations…
A: From the empirical rule
Q: Both sets of values have an average of 13. Is Set A's standard deviation smaller, larger, or about…
A: Given : Set A: 1 2 3 23 24 25 Set B: 9 10 11 14 16 18 Both sets of values have an average of 13
Q: A population data set has a mean of 81 and a standard deviation of 5.2. Find the z-scores for each…
A: Population mean, μ=81 population standard deviation, σ=5.2 The formula of z-score is, z=x-μσ…
Q: If the age distribution of customers at a major retail chain is thought to be bell-shaped with a…
A:
Q: A quantitative data set of size 150 has mean 35 and standard deviation 4. At least how many…
A:
Q: How many standard deviations to either side of the mean must we go to ensure that, for any data set,…
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 has mean 15 and standard deviation 44. Approximately what percentage of the…
A: It is given that the mean and standard deviation of the quantitate data set are 15 and 44,…
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: How many standard deviations to either side of the mean must we go to ensure that, for any data set,…
A:
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: Given that a set of scores have a normal distribution, a mean of 74, and a standard deviation of 5:…
A:
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: 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: A quantitative data set of size 100 has mean 40 and standard deviation 3. At least how many…
A:
Q: The data set has size 50. Approximately how many observations lie within one standard deviation to…
A:
Q: A quantitative data set has size 80. At least how many observations lie within two standard…
A: It is given that a quantitative data set size is 80.
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: 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 data set with roughly a bell-shaped distribution has mean 45 and standard deviation 12.…
A: The percentage of the observations lie between 33 and 57 is obtained below:Let X be an observation…
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: Both sets of values have an average of 13. Is Set A's standard deviation smaller, larger, or about…
A: The average of both the data sets is provided as 13. The deviations from mean for data set A; 1 –…
Q: In a normally distributed data set of how long customers stay in your store, the mean is 43.5…
A: Given data Mean μ = 43.5 Standard deviation σ = 3.9 95% of your customers to stay in your store.…
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: A quantitative data set of size 70 has mean 35 and standard deviation 5. At least how many…
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: A quantitative data set has a size of 50. At least how many observations lie within seven standard…
A: Suppose X is a random variable with expectation, μ and standard deviation, σ. Then, for any positive…
Q: A quantitative data set has mean 19 and standard deviation 2. Approximately what percentage of the…
A: Given that, A quantitative data set with, Mean = 19 Standard deviation = 2
Q: Given a normally distributed set of scores with mean = 86.5 and standard deviation a = 11.4,…
A: Z-scores provides the information about the location of the scores in terms of standard deviation.…
Q: A quantitative data set has size 50. At least how many observations lie within three standard…
A: The size of the data set is 50.
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 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: 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: 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: A quantitative data set has a size 50. At least how many observations lie within 3 standard…
A: Suppose X is a random variable with expectation, μ and standard deviation, σ. Then, for any positive…
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: If the mean speed for a major league fast ball is 90 miles per hour and the standard deviation is 5…
A: Given Information: Mean = 90 Standard deviation = 5 Standardized score for a pitch that is 97 miles…
Q: The shape of the distribution of the time required to get an oil change at a 15-minute oil-change…
A: a) Central Limit Theorem for mean: If a random sample of size n is taken from a population having…
Q: A quantitative data set has size 60. At least how many observations lie within three standard…
A:
Q: A normally distributed data set has a mean of O and a standard deviation of 2. What is the percent…
A:
Q: Given this data determine a) the mean customer rating and b) the standard deviation for the customer…
A: We have to calculate the mean and SD for the given frequency distribution of customer ratings.
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…
A quantitative data set of size 70 has
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 2 images