A student obtained the mean and SD of 100 observations as 40 and 5.1 respectively. It was later discovered that he had wrongly copied down an observation 50 instead of 40. The corrected variance will be Select one: O 0.5 O 25 O 625

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: 1.Find The standard deviation if the variances are: a.s? = 2.25 b.s? = 3.24 C.s? = 7.29 %3D S = S =…

A: Given  (a) S2=2.25  (b) S2=3.24  (C) S2=7.29

Q: Q4: For the following data, if the coefficient of variance (C.V) and the standard deviation (SD) are…

A: It is given that the coefficient of variance is 13.9321 and the standard deviation is 2.4381. Using…

Q: A population of grades for a statistics class of six students is given below:   80 74 65 84 85 70…

A: From the provided information, The population data is as follow: 80, 74, 65, 84, 85, 70

Q: The following data set represents the ages of all 6 of Nancy's grandchildren. 11, 8, 5, 6, 3, 9 Find…

A: The number of observations, n=6. The mean is calculated below.

Q: The following C.I.s were obtained for the mean of the same populat [16, 23] and [18, 25]. Identify…

A: From the given information, The C.I for the mean are 16, 23 and 18, 25. Consider, [16, 23].…

Q: Consider the following data. Find the variance. Round your answer to one decimal place.

A: Answer:- Given probability mass function of X x -5 -4 -3 -2 -1 P(X = x) 0.2 0.3 0.2 0.1 0.2…

Q: The following data represent the age distribution of a sample of 70 women having multiple-delivery…

A: Given: Sample size, n=70 Age Number 15-19 1 20-24 5 25-29 16 30-34 28 35-39 17 40-44…

Q: were böys and 250 girls. The results were as follows: n1 = 150 X = n2 = 250 X2 = 73 = 72 %3D 01 =7.0…

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Q: Given the weekly grocery bills of 10 customers. If the variance of the grocery bill is (16844.72),…

A: The variance of a sample isσ2=∑i=1nxi-x2n-1 And the standard deviation isσ=σ2

Q: The range and the variance are both measures of distance.

A: Solution-: The range and the variance are both measures of distance.

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 with a mean of μ= 50 and a standard  deviation of σ= 10, compute the standard error…

A: For a population with mean µ  and standard deviation σ, the standard error is σM = σ/√n, where M is…

Q: Lucas recorded his lunch expenditure each day for one week in the table below. Day Sunday Monday…

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Q: For the given data below, determine the unbiased estimators for the mean and the variance of the…

A: An unbiased estimator of the population mean is the sample mean, and an unbiased estimator of the…

Q: Given a set of data that is skewed-right, there is at least % of the data within 3 standard…

A: Given

Q: Find the variance of the following data. Round your answer to one decimal place.

A: Our aim is to find the variance.

Q: Which of the following is the most frequently used measure of variation? A) The mode B) The…

A: Standard deviation: The variation between each observation from its mean is known as standard…

Q: Complete the following statements by writing the correct word or words. 1. The mean of a discrete…

A: Fill up: 1) The mean of a discrete random variable is interpreted as the ________ value of a random…

Q: Suppose P(X E {1,2,3})=1 and E(X) =2.5. What is the smallest and largest possible values for the…

A: P(x=i) =pi where i = 1,2,3 Since P(X belongs to {1,2,3}),  p1+p2+p3 = 1…

Q: The weights (in pounds) of a sample of 36 individuals were recorded and the following statistics…

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Q: Q1 The following data represent the price (in cents) of 100 grams of red chilies in the local market…

A:

Q: The following data set represents the ages of all 6 of Nancy's grandchildren. 11,8,5,6,3,9   Find…

A: Given that, 11, 8, 5, 6, 3, 9 N=6

Q: c) Find the mean and variance of flights delayed per hour.

A: The probability distribution is x p(x) x*p(x) x2p(x) 0 0.10 0 0 1 0.08 0.08 0.08 2 0.07…

Q: n a process that manufactures tungsten-coated silicon wafers, the target resistance for a wafer is…

A: As the population standard deviation is not known, we will use t-distribution and perform a t-test.…

Q: Five of your classmates measured the diagonal length of the blackboard. Classmate A measured it as…

A: Average and standard deviation are measures of central tendency and variance respectively.

Q: If the coefficient of variation = 10% and the mean = 1000, then the %3D %3D variance is O a. 1000 O…

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Q: Given the following observations : answer questions from 9-10: 408 401 410 415 390 400 395 450 406…

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

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Q: T'he mean and standard deviation of a set of 100 observations were worked out as 40 and 5…

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Q: Use the following information to answer. 10; 11; 15; 15; 17; 22Compute the standard deviation for…

A: The mean or average of a dataset is computed by dividing the sum of observations by the total number…

Q: The following data gives the scores of 13 students in a Biostatistics exam.75 80 28 70 95 82 75 64…

A: Introduction: For a sample of n observations in a sample with values, say x1, x2, …, xn, the sample…

Q: (1) The mean and variance of y, are, respectively,

A: by bartleby policy i can give only one question at time. so ,sorry for 2nd question

Q: Some computer output for an analysis of variance test to compare means is given. Source Groups Error…

A: a) Number of groups in the given study: df for Groups=4 Number of groups-1=4 Number of groups=4+1=5…

Q: For the given data below, determine the unbiased estimators for the mean and the variance of the…

A: To determine: the unbiased estimators for the mean and the variance of the population.

Q: Compute for the range, variance, and standard deviation of the sample.

A:

Q: Histogram: fines paid by drivers 12 10 4. 1 2 3 More Number of fines paid a year by a driver Compute…

A:

Q: Which of the following samples will produce the largest value for a t statistic? Solect one: a. D =…

A: We have to identify true option.

Q: The data below is the ages of a population of 30 residents at a condominium.             28    34…

A: The given data shows the ages of a population of 30 residents at a condominium. Let x be the ages of…

Q: Q1) The following data represent the difference in scores between the winning and losing teams in a…

A: Point Difference (interval) Frequency(f) Mid value (x) (f)(x) (fx2) 1 – 5 8…

Q: Find the sample mean, sample SD, and sample variance given that the population mean, population SD,…

A: Given,population mean (μ)=18population SD=2n=15

Q: Q.4 Calculate the Variance and standard deviation from the following data Daily wages (Rs.) 400-450…

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

Q: There is a 25% chance that a visitor to an animal shelter will adopt a dog. Out of 20 visits, what…

A: Given,n=20p=0.25X=no.of dogs that would be adopted.X~Binomial(n=20 , p=0.25)P(X=x)=cxn px(1-p)n-x ;…

Q: Given the following summary statistics of the data: Ex= 100, Ex=621, n=20, ESS = 9.65 calculate the…

A: Given information: ∑x=100∑x2=621n=20ESS=9.65 Need to find the estimated variance of error and…

Q: Assume that the time it takes the housekeepir Calculate the mean and variance for the distril Select…

A: Note: As per the guidelines, we are only allowed to solve 1 question at a time, please post the…

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

A: In this question, we have data for which we have to calculate the standard deviation and tell that…

Q: Match each the following statistics to the appropriate test: ratio of variances for two d. a. t-test…

A: Explanation: t-test:  t-test is used when two samples from normal population and population variance…

Q: Consider the following data: 8 P(X = x) 0.2 0.2 0.2 0.2 0.2 Step 2 of 5: Find the variance. Round…

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Q: Given the following summary statistics of the data: Ex=77, Ex = 621, n 20 , ESS = 9.55 alculate the…

A: The estimated variance of the error is given by se2 = ESSdfe se2 = 9.5518 =0.5306

Q: 3. The data on relative humidity (in %) for the first ten days of the month in a city are given…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…