Find the variance and standard deviation for the population (Ex) use the computational formula: Σx²- - N

Q: The ages​ (in years) of a random sample of shoppers at a gaming store are shown. Determine the​…

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Q: Use a= .05 and one tailed test  t= -5.00, df= 5. reject, fail to reject

A: Given α = 0.05, two tailed test, t = -5 and degree of freedom = 5.For a two tail test if test…

Q: The length (pgs) of math research projects is given below. Using this information, calculate the…

A: 1)From data minimum value is =15maximum value =47Hence range isRange=maximum - minimum = 47-15=…

Q: fnd 2nd quartile for given data  98,79,46,92,28,65,45,12,3,85,65,45,12

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Q: I asked a sample of SCOB instructors how many football games they watched a particular weekend and…

A: From the provided information, The data values are as follow: 0, 3, 4, 1 Sample size (n) = 4

Q: A rowing team consists of three rowers who weigh 162, 166 and 170 pounds. Fihd all with replacement…

A: Given population = 162, 166, 170 Population size = 3 Sample size = 2

Q: Which measure would you use to explore the dispersion of your data? Choose all. variance mean mode…

A: We have given that,  Which measure would you use to explore the dispersion of your data?

Q: Use a= .05 and one tailed test t= 3.00, df= 10. reject, fail to reject

A: Given α = 0.05, two tailed test, t = 3 and degree of freedom = 10.For a two tail test if test…

Q: Find: -mean -variance -standard deviation  -z-scores Of this set of numbers: 1, 1, 2, 2, 2

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Q: Find the variance of X X: 73,51,73,182,45,90,111

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Q: Yi = 5,25,50,100,200.

A: Given data isYi = 5,25,50,100,200

Q: Find the variance for this data set of numbers: 58,64,24,28,38,46

A: Given sample is: 58,64,24,28,38,46. Sample size = n = 6.

Q: a. Assuming that the variances in the population of times spent on the website per day are equal, is…

A: The test is to check whether there is a difference in the mean time spent on the website per day…

Q: Find the variance for the set of data: 27, 33, 20, 25, 25. The variance is ***

A: Solution: x x2 27 729 33 1089 20 400 25 625 25 625 --- --- ∑x =130 ∑x2 =34685

Q: Fill in the following blank with either the word within or between: The arrows are pointing to which…

A: The arrows are pointing to which type of variance in the data:

Q: Pick any 10 two-digit number of your choice and calculate the mean, variance, IQR, and range of any…

A: Let the sample be  28, 21, 22, 28, 34, 26, 57, 48, 35, 31 Sample arranged in ascending order: 21,…

Q: Do the following task: 1. Construct your own table showing probability distribution using 8 data.…

A: Random Variable: A random variable is a real valued function that assign a real number to each…

Q: Can you do (c) and (d) of this dataset?

A: (c) The 30th percentile of the given data set is 643.8060 and it is calculated by using the Excel…

Q: Consider the data below: 17, 11, 10, 13, 1, 6, 18, 21, 8, 5 Compute the variance Compute the

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Q: Find the variance for the data set 34,76,53,87,62

A: From the provided information, The data values are as follow: 34, 76, 53, 87, 62 Sample size (n) = 5

Q: A teacher gave a quiz to his Mathematics class. Eight of the students scored: 73, 82, 64, 61, 63,…

A: 73, 82, 64, 61, 63, 52, 73, 70 Given Median=Q2=67, Q1=61, Q3=73

Q: How to find the variance, explain the formula

A: Mean:Mean is a measure of center in case of quantitative data. Mean of a data set is the sum of the…

Q: In a sample of 81 elements, the mean was 60 and the variance was 144. What is the standard error for…

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Q: How do you calculate the variance of a set of numbers?

A: Variance is a measure of how spread out a set of numbers is. To calculate the variance: Find the…

Q: Continue from the previous question: Two major automobile manufacturers have produced compact cars…

A: There are two major automobile manufacturers have produced compact cars with engines of the same…

Q: Calculate the range, the variance, and the standard deviation for the data that was collected on SAT…

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Q: Use the Sample Variance Definition to find the variance and standard deviation of the data. Round…

A: Consider the provided question, Let X is the sample data sets. Given X = 4, 8, 6, 3, 8, 25 N = 6

Q: Yi = 5,25,50,100,200.

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Q: Compute for the sample mean, sample variance, and sample standard deviation. HEIGHT (cm) 157 cm 149…

A: Given data is157,149,162,168,155,155,157.48,165,157,157sample size(n)=10

Q: 5. A normal population has mean 200 and variance 49. How large must the random sample be if we want…

A: Given that, The population standard deviation is,

Q: Tuesday at school the boys and girls were asked separately what their favorite type of novel was-…

A: Introduction: A data set is considered to be univariate if it collects information on only variable…

Q: population mean e. population variance f. population standard deviation. F

A: Here given , Population {2.1 , 3 3 , 7.6 , 8.5} There are 4 elements in Population  N = 4  n= 2  The…

Q: determine the variance and standard deviation for this data.

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Q: You want to know if male green darner dragonflies (Anax junius) are territorial so you collect data…

A: Given The data is as follows: Number of male green darners/square meter 7 6 7 7 8 7…

Q: A population of grades for a statistics class of six students is given below:   71,63,68,80,85,82…

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Q: Calculate the mean of the data, and then calculate the deviations for each of the 6 scores. Using…

A: 1. The mean of the data is, μ=1N∑xii=1n=6+10+9+13+14+116=636=10.5 Thus, the mean of the data is…

Q: Find the variance of the following: 12.0, 9.5, 10.5, 18.4, 33.1, 41.7, 50.6, 29.9, 23.0.

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Q: Solve the following and get the range and variance with the data 25,27,30,32,32,40,45,46,47,48

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Q: State the mean and variance of the sampling distribution of the mean?

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Q: X is a point estimator of: Select one: a. Population mean b. Sample mean c. Sample variance d.…

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