What is the mean of the distribution? What is the standard deviation of the distribution?

Q: The standard deviation of the mean is less than the sample standard deviation because it estimates…

A: Given that True or False  The standard deviation of the mean is less than the sample standard…

Q: A normal distribution has a mean of 120 and a standard deviation of 5. Find the z-score for a data…

A: The objective of this question is to find the z-score for a data value of 119 in a normal…

Q: The mean of a normal probability distribution is 120 the standard deviation is 10. About what…

A:

Q: Explain the the Chi-Squared Distribution?

A:

Q: A normal distribution has a mean of 100 and a standard deviation of 15. What is the median for this…

A: Given Mean μ=100, standard deviations σ=15

Q: Scores for a standardized test are normally distributed with a mean of 1200 and a standard…

A: given data μ = 1200σ = 60 normal distributionn = 64P(1200<x¯<1214) = ?

Q: The distribution of sample proportions tends to approximate a normal distribution. true or false?

A: The sample proportion is the number of favorable outcomes to the total number of outcomes. It is…

Q: difficult exam has a normal distribution with a mean of 50 and a standard deviation of 10. Find the…

A: #  Here given that        X~Nμ,σ  and        z=x-μσ→                    1 So according to equation…

Q: Suppose you have a normal distribution with a mean of 10 and a standard deviation of 2.…

A: According to the given information, we have Given that the normal distribution with a mean of 10 and…

Q: Explain the key features of a normal distribution

A: Normal Distribution :  The normal distribution is also called as Gaussian distribution. It is made…

Q: The standard normal distribution has a mean of zero and a standard deviation of one. TRUE or FALSE

A: A standard normal distribution has a mean zero and standard deviation is one is called as standard…

Q: What is the mode of a distribution of scores for a variable measured by? What is the variance of a…

A: Let us take a small dataset with frequency distribution and understand all the terms with this…

Q: The distribution of sample means tends to be a normal distribution. true or false?

A: This question explores the characteristics of the distribution of sample means. Specifically, it…

Q: Using the simplified version of the normal distribution, what percentage of the cases falls within 2…

A: It is given, A normal distribution with 2 standard deviation.

Q: The coefficient of variation tells you how spread out the scores are, relative to the average. The…

A: The data sets for cost of new cars and grades on test are gives, The mean can be calculated as,…

Q: TRUE OR FALSE: the standard deviation describes the average deviation between the individual scores…

A: The standard deviation is a measure of dispersion. It measures the data on how much they have…

Q: normal distribution has a mean of 80 and a standard deviation of 14. Determine the value above which…

A: Given that  X~N(μ= 80 , σ= 14 ) μ= 80 , σ= 14 Formula for Z-score Z=(X-μ)/σ

Q: What is a normal distribution in statistics, and how is it used in data analysis? How can you…

A: A normal distribution is a probability distribution that is symmetric around its mean and…

Q: What are the characteristics of a normal distribution? What two characteristics make a distribution…

A: Given that  What are the characteristics of a normal distribution?   What two characteristics make a…

Q: • Standard deviation is the most common descriptive measures of there is no variability in the…

A:

Q: A standard normal distribution has a mean of one and a standard deviation of three. True False

A: The standard normal distribution is a normal distribution with a mean of zero and standard deviation…

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: Derive mean and variance of normal distribution.

A:

Q: makes a distribution a normal distribution?

A: Properties of normal distribution  a) The mean , median and mode of a distribution is same it is…

Q: In a normal distribution, what percentage of the population lies with-in 1 standard deviation of the…

A: In a normal distribution, there are predefined percentage of the population which lies in 1 standard…

Q: what is the mean and standard deviation of all z distributions?

A: Z is distributed as a standard normal variable.

Q: A normal distribution has a mean of 3.7 and a standard deviation of 2.3. What is the median?

A: From the provided information,

Q: Yearly snow fall of a certain town follows a normal distribution with a mean of 37 inches and a…

A: Solution: Let X be the snow fall of a certain town. From given information, X follows normal…

Q: What is standard error? It is the average of a distribution of individual raw scores. It is the…

A: Here we want to know What is standard error.

Q: What happens to the graph of the normal curve as the standard deviation​ decreases?

A: What happens to the graph of the normal curve as the standard deviation​ decreases?

Q: The annual per capita consumption of oranges (in pounds) in the United States  can be approximated…

A: It is given that the mean and standard deviation are 19.2 and 4, respectively.

Q: In a Normal distribution, the average is 45 and standard deviation is 12. What is the probability…

A: