Consider a sample of 100 insurance policies from a portfolio of a general insurance company. The following table gives the frequency distribution of claims, where x denotes the number of claims and f denotes the number of policies: 1 2 70 20 9 1 Find the sample variance of claims per policy.

Q: For a population that has a standard deviation of 10, figure the standard deviation of the…

A: Given that  Population standard deviation =10 Then we have to find the standard deviation of the…

Q: Given a normally distributed population with a mean of 100 and variance 100, find ) P(90 sxs 115) 9)…

A: As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost other…

Q: The following data show the marks of some students in Mathematics Exam Class frequency 20 – 24 5 25…

A: From the provided information, Class Frequency 20 – 24 5 25 – 29 3 30 – 34 2…

Q: * :Determine the Variance for the data in the table below Classes Frequency 4.3-4.39 2 4.4 - 4.49…

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Q: The following are final grades (in terms of percentages) from a class of 20 students. 70 2 75 70 84…

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Q: A population of grades for a statistics class of six students is given below: 90 65 70 85 86 70 Find…

A: given data : 90,65,70,85,86,70

Q: For a population that has a standard deviation of 10​, figure the standard deviation of the…

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Q: What is the shape of the frequency distribution for the following set of data? X f

A: compute mean median and mode to describe the shape of the given data set. X f x*f 5 5 25 4 4…

Q: Consider the two following sample data sets. Notice that each observation in Data Set 2 is 10 more…

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Q: If the shaded area corresponds to z=-0.90, what proportion of the distribution corresponds to z >…

A: We have given that the shaded area correspond to z = -0.90.

Q: Construct a frequency distribution table for the fol- lowing set of scores. Include columns for…

A: Introduction: The frequency distribution for the given scores is to be constructed.

Q: The following values represent the number of road accidents per day for a sample of days, 9. 15 4 14…

A: Given data, 9,15,4,14,8 Sample variance=?

Q: The speeds of a random sample of 100 cars are recorded as they pass a highway checkpoint. The…

A: There is gap between the classes. So we need to change the classesso that the classes will be…

Q: H. m: Example: From the following distribution table below, find the mode Class 60- 70- 80- 90- 100-…

A: Central tendency : A central tendency (or measure of central tendency) is a typical or central value…

Q: Find the range, variance and standard deviation of the following grouped data. 1. The following…

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Q: The owner of a manufacturing plant employs eighty people. As part of their personnel file, she asked…

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Q: Find the sample variance of the following set of data: 4,12,7,5

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Q: The following table gives the frequency distribution of the number of errors committed by a college…

A: From given data, Number of errors(Xi) Number of games(fi) fi*xi fi* xi2 0 11     1 14     2…

Q: 2. Create a Frequency Distribution Table and compute for the Mean, Median, Mode, Variance, and…

A: Central tendency measure used to measure the average of location measure. There are five measures of…

Q: The following table gives the number of family members of a sample of employees in a company: Number…

A: Solution : Given that, Number of family members Number of employees 3 8  4 12 5 24 6 28…

Q: Consider the following frequency distribution. Class Midpoint Frequency 0 – 9 4.5 6 10 – 19 14.5 14…

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Q: The following tables given the frequency distribution of a number of peas per pea pod  of 198pods.…

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Q: for the set of scores 10 15 20 20 15 calculate the range variances and standard deviation by hand

A: Given that ; scores(x) ; 10 15 20 20 15 By using formula  Range = highest value - lowest value…

Q: The table below shows the age distribution of a sample of 150 students at UCC. Find an estimate of…

A: Data given Let X=Age , Number =f  Age Number  25 - 34 33 35 - 44 39 45 - 54 48 55 - 64 30

Q: . Consider three groups of employees who are exposed to three different methods of managing…

A: For Group A : XXA XA2 75 5625 80 6400 95 9025 80 6400 85 7225 Sum = 415 Sum = 34675…

Q: Compute the mean, median, and mode for the set of scores presented in the following frequency…

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Q: Find the variance of the following data points: 100.1, 97, 77, 68, 123.4, 23.5, 214, 156, 214.2,…

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Q: Consider a sample of 125 insurance policies from a portfolio of a general insurance company. The…

A: We want to calculate the coefficient of skewness of the data

Q: Prepare a frequency distribution table for the following data. Also compute for the mean, median,…

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Q: The table below gives the number of accidents each year at a particular road junction: 2000 2001…

A: S.no. x (x-xbar)^2 1 2 6.890625 2 3 2.640625 3 4 0.390625 4 4 0.390625 5 5 0.140625 6 5…

Q: Construct an ungrouped frequency distribution for the data.

A: It is given that Number of observations n = 30 Data arranged in ascending order :  2, 2, 3, 3, 3, 3,…

Q: For a sample of 12 offenders convicted of weapons violations, the length of prison sentence in…

A: Solution-: Given data: 6,6,2,12,17,48,60,24,20,20,18,15 What is the shape of this given…

Q: The following frequency table shows a distribution for a random sample of 25 customers at a variety…

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Q: Compute for the mean and variance of the given frequency distribution below: Score Number of…

A: Frequency (f) f⋅x f⋅x2 5 3 15 75 8 5 40 320 10 4 40 400 12 5 60 720 15 3 45 675 ---…

Q: Consider the following frequency distribution for a sample of 20 observatlons Class 0 < 5 5< 10 10 <…

A: sample mean x=∑fii=1pmin

Q: The speeds of a random sample of 100 cars are recorded as they pass a highway checkpoint. The…

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Q: The speeds of a random sample of 100 cars are recorded as they pass a highway checkpoint. The…

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Q: n order to study the spending habits of shoppers in Orlando, Florida, 50 randomly selected shoppers…

A: The data set is: 4 5 0 4 2 1 1 5 3 5 4 3 4 0 5 2 5 2 0 2…

Q: The following table gives the frequency distribution of the number of rooms for a sample of 100…

A: Solution: 16. The given frequency distribution of the number of rooms is

Q: The following data show the monthly rental price (in $) for a random sample of one- bedroom…

A: Descriptive statistics

Q: Consider the following frequency distribution for a sample of 20 observations Class 0< 5 5< 10 10 <…

A: Here, Interval Frequency, f Midpoint, x fx x-x (x-x)2 f.(x-x)2 0-5 5 2.5 12.5 -6 36 180 05-10…

Q: A factory owner has taken a sample (n = 20) of workers to see how many broken widgets each employee…

A: The sample includes total of n=20 observations.

Q: For a population that has a standard deviation of 22​, figure the standard deviation of the…

A: Population standard deviation = 22 We know that standard deviation of the distribution of means = σn

Q: Which of the following best describes the variance for this sample of observations: 2.3, 4.5, 6, 8…

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Q: The following frequency distribution that represents the number of minutes participants travel to…

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Q: Compute for the mean, the variance and standard deviation of this frequency distribution. Score…

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Q: The following data show the monthly rental price (in $) for a random sample of one- bedroom…

A: Given :- Mean=700 Tabular data of monthly rental price.we need to determine the median,variance.…