chi-square distribution?

Q: Bivariate normal distribution an assumption for the Pearson Correlation?

A: For the purpose of evaluating the intensity of linear relationship between two variables, we do not…

Q: binomial distribution, P(12.< X <= 14.) is closest to:

A:

Q: Transforming an entire distribution of scores into z-scores changes an originally positively skewed…

A: z-score: By transforming the original scores into z-scores, the resulting distribution has mean 0…

Q: et-distribution curve will eventually approach a normal curve as we increase the degrees of freedom…

A: We know that  The t - distribution depends on degrees of freedom  Df = n -1

Q: What statistical distribution is used for testing the difference between two population variances? a…

A: Answer- ● d    F-Fisher distribution

Q: what is normal distribution? What information does it provide? Why is it important?

A: The normal distribution is used for finding the probability of the continuous variable when the data…

Q: Briefly describe the difference between a Type I error and a Type II error. Make up an example to…

A: Introduction - Hypothesis testing is used in statistics to test the assumption regarding a…

Q: difference poisson and binomial distribution

A: The binomial is one, whose possible number of outcomes are two. example: Success or failure. The…

Q: Mean =. Variance = Standard Deviation = , a. What kind of information or data should be obtained to…

A: Given information:-   Player A Player B x P(x) x*P(x) x-μ2·P(x) x P(x) x*P(x) x-μ2·P(x)…

Q: A fair coin is tossed 60 times. Find the probability that the head appears between 20 and 40 times…

A: X~Bin(n=60, p=0.5) P(20&lt;X&lt;40)= ?

Q: Wild deer population weight has standard deviation of 50 lb. What is the probability of existence of…

A: Wild deer population weight has standard deviation of 50 lb.  Sample size, n = 100 x¯-μ=±5

Q: Sampling distribution only applies for a single sample True False

A: We have given that,  Sampling distribution only applies for a single sample?

Q: (a)(i)What is the distribution of the proper test statistic for doing inference for the population…

A: Here length of adult male dolphins are normally distributed  Here population standard deviation is…

Q: Explain the Multivariate Normal Distribution?

A:

Q: The standard deviation of a probability distribution is a measure of: the shape of the distribution…

A: We will solve the following

Q: ! Variable Xis to be modeled using a uniform distribution. The lower bound value is 5, and the upper…

A:

Q: (b) What is normal distribution? Point out important properties. Describe nature of normal curve.

A: We have to describe about the normal distribution.

Q: What is a chi-square distribution? Explain and give an example.

A: Chi-square is the distribution of a sum of squares independent standard normal random variables. If…

Q: How to calculate the mean and variance of Poisson distribution?

A: As we know that Poisson is a discrete Probability distribution.  If X is a random variable and it…

Q: Sampling distribution of difference between two means is normally distributed.

A: Let; X1, X2,..., Xm~Normal(μx, σx2), independentlyY1, Y2,..., Yn~Normal(μY, σY2),…

Q: Differentiate mean, variance and standard deviation b.Enumerate the properties of a standard normal…

A: Here we need to differentiate the measures of central tendency and dispersion. And also define to…

Q: Which one is not measuring the degree to which the scores in a distribution are spread out or…

A: Variance is a measure of dispersion. It measures how far each observation falls from the mean of the…

Q: true or flase. the chi-square distribution, just like the normal distribution, has two parameters,…

A: It is an important part of statistics. It is widely used.

Q: Which normal distribution has a wider spread: the one with mean 1 and standard deviation 2 or the…

A: The one with the larger spread is the one with the larger standard deviation.

Q: what is normal distribution? What information does it provide? Why is it important? how the normal…

A: The normal distribution is used for finding the probability of the continuous variable when the data…

Q: Properties of a normal distribution then explain it in own words

A: Please find the explanation below. Thank you

Q: positive deviation score indicates that a score in a distribution is less than the mean. True or…

A: A Z-score is a numerical measurement that describes a value's relationship to the mean of a group of…

Q: expected distribution shape?

A: Here use box plot for represent the given summary

Q: Sample size 9 whose data are given below is drawn from a population having a mean = 8 and standard…

A: Mean of sampling distribution,  Then x̄= ΣXi/n =(11+5+7+11+10+13+13+11+9)/9 =10

Q: Binomial distribution probability is based on a. Mean and standard deviation Ob. Number of trials…

A: The binomial distribution is a discrete probability distribution.

Q: Two normally distributed variables have the same means and the same standard deviations. What can…

A: Two normally distributed variables have the same means and standard deviations have the same…

Q: What statistical test should be used if the parameters of a distribution, specifically its mean and…

A:

Q: The distribution of average years to degree for random samples of 100 PhD students in the U.S. has a…

A: Solution Given the distribution of average years to degree for random samples of 100 PhD students in…

Q: standard deviation and the sample variance.

A: Given that, 120 113 85 59 223 154 180 156 112

Q: What can histograms be compared to in order to determine if a data set has a normal distribution? O…

A: We have given that the statement about to histogram’s comparison if the data set has a normal…

Q: ANOVA is a statistical test for comparing. Population standard deviations Population variances…

A: The answer is in the next step.

Q: 1.  In a sentence or two, explain what a sampling distribution is. 2. In a sentence or two explain…

A: Introduction: The concept of standard error of the mean is relevant in the context of the sampling…

Q: Write what you know about normal distribution and standard distribution ?

A: Define normal distribution and standard normal distribution

Q: The difference between binomial distribution and poison distribution

A: We want to tell the difference between binomial distribution and poison distribution

Q: Chi-squared distribution

A: Correct answer: Normal Quantile-Quantile plot

Q: expectation and variance of the Uniform Distribution

A: Hello, since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Mean of sampling distribution of means Standard deviation of the sampling distribution of means

A: We have given that data  3 ,7, 11 , 15 Sample size n =4 I want to find standard deviation of the…

Q: Trying to figure out standard deviation of sampling distribution

A:

Q: Determine Range sample standard deviation sample variance what does the results tell us?

A: Given jersey numbers of 11 players: 86, 3, 32, 80, 74, 63, 76, 29, 48, 95, 23.

Q: at is non-normal distribution? Give an example of a distribution that might be  non-normal

A: Non- normal distribution is the distribution which is not symmetric , bell shaped and unimodal that…

Q: Discuss the usefulness of the Normal Distribution. Properties of various discussions

A: The normal distribution has central limit theorem/ property. According to which if samples of large…