Find the z-score that is greater than the mean and for which 70% of the distribution's are Click to view page 1 of the table. Click to view page 2 of the table. O A. 0.47 O B. 0.98 O C. 0.81

Q: According to the empirical rule for population data that form a normal distribution, what percentage…

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Q: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…

A: Given data,

Q: The scores of a nationwide mathematics aptitude test are normally distributed with a μ = 80 and…

A: Given : The scores of a nationwide mathematics aptitude test are normally distributed with a μ = 80…

Q: 3. For the distribution in the following table, what is the 50" percentile? X 9. c% 100% 80% 50% 25%…

A: 3.

Q: College freshmen took a psychology exam. If the mean is 80, the standard deviation is 10, and the…

A: Given mean = 80  And , Standard Deviation = 10

Q: The variance and mean for a given set of data is 25 and 64 respectively. Calculate the standard…

A: We have given that,  Variance (s^2) = 25 Mean (x-bar) = 64 Then, We will find the standard…

Q: The mean and standard deviation of a population are 200 and 20, respectively. Suppose samples of…

A: We have given that, Population mean (μ) = 200, standard deviation (σ) = 20 and sample size (n) = 36…

Q: In an examination, the mean grade is 81 and the standard deviation is 6. Find the Z-score of the…

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Q: Find the value of P if the mean of the following distribution is 4 2 3 f P. 1,

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Q: In a certain population, let us assume that IQ scores are normally distributed with mean of 100 and…

A: A percentile is a comparison score between a specified score and the scores of the remaining data…

Q: The following data shows the scores of 10 students in a certain test in Mathematics. Assume that the…

A: Given that  Students  Score  1 24 2 26 3 32 4 37 5 38 6 35 7 33 8 38 9 37 10…

Q: A sample of scores has a mean of ? = 35 and ? = 6. Find the z-scores that correspond to the…

A: We have given that,  Let Y be the random variable from normal distribution with mean (μ) = 35 and…

Q: How large of a sample is needed to estimate the mean of a normally distributed population if we know…

A: Given,standard deviation (σ)=36margin of error(ME)=7α=0.10α2=0.05Z0.05=1.645   (from Z-table)

Q: Find the values of the 60th, 70th, and 80th percentiles of a normal distribution for which Mean and…

A: Given: mean =μ =10  standard deviation = σ= 10

Q: In the diagram below, what is the value of the standard deviation? What is the mean? 4.0 4.5 5.0 5.5…

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Q: A z-score tells us how many standard deviations a score is from the mean. What is another word for…

A: Measure of central tendency measures the central value of a dataset. Measured of dispersion measures…

Q: Use a table of z-scores and percentiles to find the percentage of data items in a normal…

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Q: Given a set of scores below, write down the scores one, two, and three standard deviations above the…

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Q: Use the figure to answer the questions. Describe the shape of this distribution. 3. 8. a. 5 4 b. Is…

A: a. Shape of this distribution: If the data is equally distributed, then the shape of the…

Q: In a normal distribution, what z-score value separates the highest 90% of the scores from the rest…

A: Let X be a random variable which belongs to normal distribution. For a standard normal distribution-…

Q: This histogram shows the distribution of the numbers of siblings (brothers and sisters) for 2082…

A: Solution-: We want to identify the which choice is most likely to given histogram?

Q: College freshmen took a psychology exam. If the mean is 80, the SD is 10, and the scores have normal…

A: Let X be the random variable from Normal distribution with mean (µ) = 80 and standard deviation (σ)…

Q: The number of cartoons watched by Ms. Smith's first grade class on Saturday morning is shown below.…

A:

Q: Find the margin of error for the given values of c, s, and n. c = 0.99, s 5, n=9 E Click the icon to…

A: we have given that  c= 0.99 ,s=5 ,n=9

Q: The weights of the native North American Blue Jay have a mean of 18.4 ounces with a standard…

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Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

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Q: Which statement is true about a normal distribution? O The mean is equal to twice the median and the…

A: given

Q: Using Chebyshev's rule, at least what percent of the distribution lies between 3 standard deviations…

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Q: Sample heights of twenty students in a class in inches: 60 62 62 63 64 64 65 65 66 66 66 67 68…

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Q: figure the standard deviation of the distribution of means for a population with a standard…

A: Population standard deviation is given and sample standard deviations have to be calculated for…

Q: An instructor gives a 100-point examination in which the grades are normally distributed. The mean…

A: Given : mean (μ) =65standard deviation (σ) = 12

Q: We have a distribution with a mean of ? = 35 and ? = 3.5. Find the raw score equivalents for the…

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Q: Q2 (c): According to the above frequency distribution table, the :value of mean deviation (MD) is

A: here given grouped frequency distribution

Q: The mean and mode of a Normal distribution is 65.7, Then the median of the distribution is a. 75.6…

A: The mean and median of normal distribution is 65.7.

Q: if its 80th percentile is the value 160, what is the value that corresponds to its 20th percentile

A: Given, Mean, μ = 140 80th percentile is the value 160. x = 160

Q: For the distribution in the following table, what is the 60th percentile? c% 50-59 100% 40-49 90%…

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Q: The heights of Crepe Myrtle saplings at a local nursery are measured and the data recorded. The data…

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Q: The mean and median of a frequency distribution is 15 and 20 respectively. Then the mode of the…

A: Given : Mean = 15 Median = 20

Q: The mode and mean of a normal distribution is 45. Then, the median of the distribution is O a. 22.5…

A: Given information: Mean=45, Mode=45 All the normal distributions are symmetric around their mean.…

Q: First Aid Course  The college physical education department offered an advanced first aid course…

A: If the mean score was 50 with standard deviation 20. Z score for Robert is 1.10 Z score for Joel is…

Q: How many of the sample of families would fall above 2 standard deviations from the mean? A. 0 B. 1…

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Q: Find the mean of the distribution shown below. 3. 7 P(X) 0.21 0.07 0.58 0.14 O 6.23 0.25 O 24

A: To find the mean of the distribution

Q: P(x) 0.03 1 0.07 2 0.33 3 0.36 0.08 0.13 5.

A: Mean(x)=∑x·P(x) Calculating x*P(x)  x P(x) x*P(x) 0 0.03 0 1 0.07 0.07 2 0.33 0.66 3 0.36…

Q: 14. In a positively skewed distribution, Kim scored the mean, Khloe scored the median, and Kourtney…

A: Given: Kim Scored Mean Khloe Scored Median Kourtney Scored Mode

Q: The Mathematics section of the ACT test had a mean of 20.9 and an SD of 5.3 for the years 2013–2015.…

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Q: Minister of Education Inese Puuce measured the English test scores of every child in the Grand Duchy…

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Q: Find the margin of error for the given values of​ c, s, and n. c=0.99​, s=5​, n=26

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Q: The following data are given to you to find out whether the distribution is platykurtic N= 100, Efd,…

A: Concentration of all the values around the central value of the given data is known as measures of…

Q: The mean of a distribution is 23, the median is 24, and the mode is 25.5. It is most likely that the…

A: GivenThe Mean of a disttribution = 23Median=24Mode =28