What proportion of a normal distribution is located above the mean?

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: How to know if a histogram is a normal distribution

A: In general, the graph of the normal distribution is bell-shaped and symmetric. Here, bell shape of…

Q: Describe the standard normal distribution. What are its characteristics?

A: Standard normal distribution curve is given.

Q: percentage of scores lie within 2.34 standard deviations on both sides of the mean?

A: Standard normal distribution

Q: How is the normal curve important in psychological testing?

A: Here we have to explain how the normal curve important in psychological testing

Q: What is the benefit of modeling a random variable with a normal distribution

A: Here we have to give the reason for the benefit of modeling a random variable with a normal…

Q: On a standard normal distribution, what percentage of scores lie within 2.94 standard deviations on…

A: To find the probability that a score lies within 2.94 standard deviations on both sides of the mean…

Q: he mean of a normal distribution corresponds to a z-score of 1.    True  False

A: A z-score is a standardized value. Its distribution is the standard normal, Z ~ N(0, 1).

Q: State two of the main reasons for studying the normal distribution.

A: The two main reasons for studying the normal distribution are as follows:The normal distribution is…

Q: On a standard normal distribution, what percentage of scores lie within 2.89 standard deviations on…

A: We need to find the scores that lie within 2.89 standard deviations.

Q: Explain the relationship between percentages for a normally distributed variable and areas under the…

A: The normal distribution: A continuous random variable X is said to follow normal distribution with…

Q: Explain the Multivariate Normal Distribution?

A:

Q: You cannot assume that a random sample taken from a population  follows a normal distribution if the…

A: Answer:- Normal distribution:-

Q: In a normal distribution, what percentage of the area under the curve is within three standard…

A: We have given the following statement about normal distribution.

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: Statisticians believe that if a test is valid, it should follow a normal distribution with a mean of…

A: Statisticians believe much time if the test is valid it follows Normal Distribution many times but…

Q: Decreasing the mean does what to a normal curve?

A: Changing the mean of a normal density curve shifts the curve along the horizontal axis without…

Q: For a normal distribution of negative Z score means tha

A: Z-score value is negative.

Q: For a normal distribution, the mean is equal to the median. True False

A: The Normal distribution is Symmetric distribution. So,  Mean = Median = Mode.

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

A:

Q: What z-score value separates the highest 10% of the scores in a normal distribution from the lowest…

A: We want to find highest 10% value for z score

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: Derive mean and variance of normal distribution.

A:

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

A: