tion system. Find the mean and variance of the total amount spent by the four sampled homes. Give a range where this total is likely to fall.

Q: Find the variance for this data set of salaries 30, 34, 52, 48, 25, 36, 27 Round the…

A: The mean of the sample data can be obtained as:

Q: In a series of 5 observations, the values of mean and variance are 4.4 and 8.24. If three…

A:

Q: If two different sets of data have the same range, does the variability for both sets have to be the…

A: Range:The range is the difference between the largest and smallest observations in a set of data.…

Q: In one​ city, 24​% of adults smoke. In groups of size 140 of​ adults, what is the variance of the…

A: Givenp=0.24n=140x~Binomial(n=140,p=0.24)P(X=x)=(nx)×px×(1-p)n-x      ; x=0,1,2...,n

Q: There are three children aged 3, 4, and 5 in a room. If another 4-year-old child enters the room,…

A:

Q: To obtain a maximum amount of variance, an item ought to have a degree of difficulty of what?

A: To obtain a maximum amount of variance an item ought to have a degree of difficulty is the number of…

Q: The accompanying table contains the overall download and upload speeds in mbps for nine carriers in…

A:

Q: If a data set has 25 values and a standard deviation 7.4, what is the variance?

A:

Q: The lifetime of watch batteries follow a normal distribution with mean 100 hours and variance 49…

A: Let X be the random variable from normal distribution with mean (μ) = 13, variance     (σ2)= 49 then…

Q: When solving a problem related to one sample and the confidence interval of variance. Which table…

A:

Q: Situation The sum of the product of the individual frequency and difference of the datum and mean is…

A:

Q: Situation The sum of the product of the individual frequency and difference of the datum and mean is…

A:

Q: If we delete the largest observation from a sample, then the sample mean and variance will both be…

A: The mean is the average of a group of numbers, and the variance measures the average degree to which…

Q: What is Variability between Groups?

A: Introduction: Consider k groups are to be compared with respect to their means, when it is known…

Q: We can eliminate some outlier problems by using O a. Interquartile range O b. Range O C. Coefficient…

A: We have to find correct option.

Q: Prachi rolls a die a number of times and records her outcomes in a bar graph as shown in Figure…

A: From the graph, the frequency of getting each number in the die is given in the table form below.…

Q: The sample mean and sample variance  of five data values are, respectively  13.6 and 25.8.If three…

A: Given that mean =13.6 and sample variance is 25.8. The three data values are 7,13 and 20.…

Q: The battery life of the new iPad Mini introduced Apple is uniformly distributed between 8.5 and 12…

A: Formula is:

Q: Find the standard deviation for the group of data items.   15​, 15​, 15​, 17​, 17​,

A:

Q: If a data set has values and a standard deviation 7.4, what is the variance?

A:

Q: The finishing times of two runners for several one-mile races, in minutes, are shown in the box and…

A: The box and whisker plot for any given data is used to define the various parameters such as:…

Q: If a data set has 25 values and a standard deviation of 7.4, then the variance is?

A: Given: Standard deviation = 7.4

Q: We use control charts to monitor a. random variation. b. assignable variation C. natural variation

A: Control charts are used to monitor two types of variation : Common-cause variation and Special cause…

Q: What is the variance of the data set 14,23,9,12,21,18,8

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Q: What is the variance of the following data( 1, 2, 3, 4, and 5)?

A: According to the given information in this question We need to calculate the value of variance

Q: Suppose that 67% of college students in Australia use more than 1.65 gigabytes of data on their…

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Q: 4- Give examples of data measures where we would find the data to be normally distributed and what…

A: Many things are normally distributed, or very close to it.

Q: kindly compare  the variances  between these  graphs

A: Variance and standard deviation: Both the variance and the standard deviation are base d on how much…

Q: What is the variance of the data set 14,23,9,12,18,8

A: Given Data :  XX 14 23 9 12 18 8 Below table will be used to calculate variance :…

Q: Given data points (2. -1). (2, 1). (3, 2). (0,- 1)and (3, -1). find the total variance of the data.

A: Given:  Data :  (2 , -1 ) , (2 , 1 ) , (3 , 2) , (0 , -1), (3,-1)

Q: If the probability that an object dropped from a certain height will strike the ground is 80 percent…

A: Solution- Given that , let p denote the probability that an object dropped from a certain height…

Q: If the variability between the different sample means taken from the same population is small, we…

A: If the variability between the different sample means taken from the same population is small, we…

Q: Given the data: 1, 4, 3, 5, 4, Its Variance value is 2 3 4

A: by using given data(x);  1,4,3,5,4 x x2 1 1 4 16 3 9 5 25 4 16 ∑x=17 ∑x2=67

Q: If the correlation is .8, then 40% of the variance is explained?

A: The given statement is incorrect.

Q: Based on the hourly incomes (in US dollars) of employees in two different branches at Citibank,…

A: Variability refers to the spread of the data . It allows us to compare two datasets.

Q: What is Variability within Groups?

A: The term variability within groups is used in ANOVA technique, it is also known as error variance…

Q: The difference between the largest and the smallest data values is the O variance O interquartile…

A: Variance: It is measure of dispersion that measures the amount of spread of all the data points from…

Q: Determine the mean and the variance of X.

A: Given that  f(x) = 0.125 x    for 0<x<4   We know that  Mean = E(x) = ∫x.f(x) dx variance V(x)…

Q: If all of the students in a class earn the same score on a quiz, what should be said about the…

A: Given question: If all of the students in a class earn the same score on a quiz, what should be said…

Q: Suppose that the variance of the sample mean is equals 25 and the sample size is 6 . then the…

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Q: If a data set has 16 values and a standard deviation 9.4, then the variance is

A: Given information: A data set consists of n = 16 values. The value of the standard deviation is, s =…

Q: Once the correlation coefficient is known, how can we find the amount of the shared variance?

A: Concept:  correlation coefficient measures the degree of linear relationship between two variables.

Q: and if the scores A set of 10 scores has SS= 90. If the scores are a sample, the sample variance is…

A: Population variance ,σ2, tells us how data points in a specific population are spread out. It is the…

Q: If the highest 8% of students in the final exam were rewarded. The mean for this exam was 120 & the…

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Q: Find the variance of the given table in the attached photo

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Q: If the probability of hitting an object is 0.8, what would the variance be?

A: Given problem Given that   If the probability of hitting an object is 0.8, what would the variance…

Q: Calculate the mean b) Calculate the median c) Calculate the variance

A: a) The midpoint value and sums are, Time Frequency(f) Midpoint(x) fx 5 - 9 3 7 21 10 - 14 8…

Q: The owner of a small company employs 6 people. As part of their personnel file, she asked each one…

A: