It's estimated that only about 5% of the population has hazel eyes. What is the probability that only 10 people from a gathering of 100 people have hazel eyes? Calculate the mean and the variance of the number of hazel-eyed people from a gathering of 150 people.

Q: how to calculate the variance?

A: Given  The data is as follows: Overall mean = 4.07 Variance = 0.00130 SD = 0.1140

Q: What is the variance and standard deviation of 2, 4, 5, and 6?

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Q: The two types of variance that can occur in our data are A. Independent and dependent

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: Suppose a population has three values 13, 17 and 24. What is its variance?

A: Given: n=3 The mean of the data is obtained as below: Mean=∑xn=13+17+243=543=18 The mean is 18.

Q: compute for the mean, variance and standard deviation.

A: Here given, Three paper bills are drawn in succession without replacement from a piggy bank. Piggy…

Q: A quality control expert at LIFE batteries wants to test their new batteries. The design engineer…

A: The normal distribution is the most useful theoretical distribution for continuous variable.  For…

Q: What is an everyday example of variance within samples?

A: If we need to know the variance within samples, we need to use ANOVA Test.

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

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Q: the probability for the number of sales calls completed per day by a number of sales people is given…

A: Given X 0 1 2 3 4 Px 116 416 616 416 116

Q: A local bottling company has determined the number of machine breakdowns per month and their…

A: Random variables are of 2 types, discrete and continuous. A discrete random variable can only take…

Q: Two balanced coins are flipped. What is the variance of the number of heads observed?

A: For this case, the number of possible outcomes will be:  (HH), (HT), (TT), (TH) Here, H represents…

Q: How do you find the standard error estimate of two disjoint populations, assuming they have the same…

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Q: Two samples, each with n =5 scores, have a pooled variance of 40. What is the estimated standard…

A: Given: Let the pooled variance be sp2 n1=n2=5   Let the standard error be SE Formula for Standard…

Q: how to find the variance?

A: Variance is a measure of variability. It is computed by the average of squared deviations from the…

Q: A random sample of the number of games played by individual NBA scoring leaders is shown. Is there…

A: The mean and variance is calculated as follows:

Q: what is its distribution, its mean and its variance?

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Q: From past experience, it is known 90% of one-year-old children can distinguish their mother's voice…

A: Given Information: To find out the variance of x.

Q: researcher working with socioeconomic data showed a significant positive correlation between the…

A: Given Coefficient of correlation, r=0.19

Q: What is variance?

A: Variance is a measure of dispersion or spread of a data distribution. Variance of a data…

Q: A history class has 75 members. If there is a 12% absentee rate per class meeting, find the mean,…

A: It is given that n is 75 and p is 0.12.

Q: The accompanying data table lists results from car crash tests. Included in results from car crash…

A: Categorical variable: The variable that consists of the attributes and has different categories,…

Q: Calculate the variance and standard deviation. x: 0, 1, 2, 3, 4 P(x): .4, .1, .1, .1, .3

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

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Q: In your two sets of Statistics tests, find the mean of the number of tests that will be passed. 1.…

A: Given: The provided dataset is given as: Number of passed test (x) Probability P(x) 0 0.25 1…

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: The r2represents the shared variance between a predictor and _______

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Q: The promoter of a touring dance show wishes to analyse how the price per ticket affects the size of…

A: Sample mean and standard deviation for the two prices are as follows…

Q: What is formula for the variance of the population?

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Q: Find the variance of these data

A: From the given given sample data : n=5 , ƩX=105 , ƩX2=2333  Our aim is to find the sample variance

Q: following data, calculate the variance of X (sample variance).

A: The sample mean is, X¯=∑Xn=426=7 The sample means is 7.

Q: How to Reconstruct the Variance step by step?

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Q: It is known that the population variance equals 522. What is the sample size that needs to be taken…

A: It is given that:

Q: The contents of a sample of 26 cans of apple juice showed a standard deviation of 0.06 ounce. We are…

A: Given,   Sample size n=26   Sample standard deviationS=0.06   Population standard deviation…

Q: sample of seven laptop computers had a variance of 25.88 years when the lifespan of the computer was…

A:

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: What does it mean that the variance (computed by dividing by N) is a biased statistic?

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Q: Choose the letter of the best answer. 1. Which of the following data show most likely the largest…

A: Variance is a statistical measure that tells about the degree of spread in a given data set. More…

Q: The standard deviation of a sample of 100 observations equals 64. The variance of the variance…

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Q: Students Number of Tests 22 1 15 2 8 3 5 4   b. Compute the variance and the standard…

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

A: The given statement is incorrect.

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

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Q: Two samples, each with n = 5 scores, have a pooled variance of 40. What is the estimated standard…

A: Given Datan1 = n2 = 5pooled variance = 40Estimated standard error is given by

Q: In analysis of variance, the F-ratio is a ratio of

A: F ratio is a ratio of 2 variances or two mean squares. Mean squares are simple variances that…

Q: The F-statistic is a ratio score resulting in a measure of the estimated proportion of variance due…

A: The F-statistic is a ratio score resulting in a measure of the estimated proportion of variance due…

Q: If, in an analysis of variance, you find that MSTR is greater than MSE, why can you not immediately…

A: While performing Analysis of Variance (ANOVA), we calculate the test statistics which is the ratio…

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: the homogeneity of variances assumption states that the variance in the two samples must be equal?…

A: Homogeneity of variances always make about the population variance not about sample.