3. Why is a t-distribution generally more variable than a normal distribution?

Q: In a standard normal distribution, the mean is always 0 Does this suggest that half of the scores…

A: In a standard normal distribution, the mean is always 0 and the Standard deviation is always equal…

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: Derive mean and variance of gamma distribution.

A:

Q: State the properties of s normal distribution.

A: Normal distribution- when mean is 0 and standard deviation is  1 is called standard normal…

Q: The difference between two sample means follows a normal distribution if both populations follow a…

A: True We can find it by using the Central limit theorem. By the theorem, difference in sample means…

Q: When the sample size is over 30, when would the t test be used instead of normal distribution?

A: A t test will be used, when the population standard deviation is unknown and either the population…

Q: Under what circumstances is the distribution of sample means definitely a normal distribution?

A: We have to tell conditions : The distribution of sample means definitely a normal distribution.

Q: rue of False? As the sample size of randomly selected samples increases, the distribution of the…

A: The statement is given.

Q: Come up with your own data for a problem that you would have to find a p-value for a normal…

A: Problem,  A police inspector claim that the average number of FIR in his Police Station is 8 per…

Q: standardized scores and normal

A: Normal distributions have a specific curve, and I’ve already posted about that elsewhere; the…

Q: median and IQR

A: IQR is the Interquartile range it is also called midspread or it denoted the middle 50% of the…

Q: When figuring probabilities for a normal distribution why is it necessary that we must convert to a…

A: For figuring out the probabilities for a normal distribution,whatever the parameters might be,we…

Q: Differentiate the different distributions 1. Normal 2. t-distribution

A:

Q: the filling will always be incosistent, in that the amount in each box is Normally distributed, and…

A: It is given that standard deviation is 0.40 ounces.

Q: How is normal distribution can be misused in a airline company?

A: Introduction The normal distribution is a continuous prob. dist.

Q: Explain the Multivariate Normal Distribution?

A:

Q: Does the distribution of sample variances tend to be a normal distribution

A: The shape of the sample distribution of sample variance will depend on the shape of the population…

Q: What type of data could possibly follow a Normal distribution? O Binary O Qualitative Discrete…

A: According to the given information,  Normal distribution is used.

Q: Find two z-scores that bound the middle 40% of a normal distribution

A:

Q: how to know if something is a normal distribution or not

A: Introduction:Several tests of normality exist, using which you can verify whether a particular data…

Q: If a sample is randomly collected, we can be assured that the data follows a normal distribution.…

A: We know that ;  Any randomly collected data follows normal distribution if and only if data set must…

Q: Identify if its true or false A normal distribution is symmetrical at the mean, i.e. the left side…

A:

Q: How does the sample size affect how close to normal a distribution of either sample means or sample…

A: The statistic measures the characteristics of samples to estimate the population.

Q: what is the importance of knowing the concepts of a normal curve?

A:

Q: What are the main characteristics of the normal distribution? Why is it advantageous to use the Z…

A: There are 2 types of probability distribution which are stated as follows:Continuous probability…

Q: Nonparametric test is a design to counter the non-normal distribution type of data. O True

A: Nonparametric test: The nonparametric tests are used if the population distribution is not known.…

Q: II. Consider the data from two samples displayed in the two histograms: Sample A Sample B 30 30 25…

A:

Q: What are the predictor variables in general and what we can observe in general—normal distribution,…

A: Histogram: A simple bar graph of the data where the width bars are the range of the data and the…

Q: What is the Empirical Rule and how does this rule apply to a normal distribution of data?

A: We have to define the Empirical Rule and how does this rule apply to a normal distribution of data.

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.