You cannot assume that a random sample taken from a population  follows a normal distribution if the distribution of the data looks like a normal distribution. True False

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: In a survey of 905 U.S. adults who follow baseball in a recent year, 192 said that the Boston Red…

A:

Q: ive one property of normal distribution and then explain it in you own words

A:

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: Explain the the Chi-Squared Distribution?

A:

Q: Write down the important properties of the Normal Curve.

A: A normal curve is identified using the values of the mean and standard deviation to show the…

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: 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: Researchers ask a group of people about how they get to work. They also group the people by their…

A: There are two variables, political party and how they get to work. There are two categories under…

Q: Problem. For a standard normal distribution, find the percentage of data that are more than 2…

A: To find the given percentage.The standard Normal distribution is given below. It has mean is 0 and…

Q: In a Binomial distribution mean 4 and variance is 2. Find the mode of %3D Binomial distribution.

A: Given that Mean = 4, Variance = 2 Find Mode = ?

Q: Assume thAt scores on a standardized test are known to follow a bell shaped distribution with a mean…

A: L

Q: any normal distribution, a z-score of z = -1 separates the highest 68% of the scores from the rest…

A: Given that  A z-score of z = -1 separates the highest 68% of the scores from the rest of the…

Q: What are the Properties of the Normal Curve?

A: A normal curve is identified using the values of the mean and standard deviation to show the…

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

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

Q: True or False:   In a symmetric distribution, the mean and median are approximately the same.

A: Given that  In a symmetric distribution, the mean and median are approximately the same.

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: The distribution of sample variances tends to be a distribution skewed to the right. true or false?

A: When sampling from a normal distribution, by the definition of the Chi-square variate,…

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: 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: Explain when a random variable might be modelled using a Normal distribution, and give an example of…

A: Mathematically, Whenever a random variable is formed by adding a number of other individual…

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

A: Z-score value is negative.

Q: Define the sampling distribution of the sample mean for normal population when the variance is…

A: Let the sampling distribution of the sample for normal population when the variance is unknown is…

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: 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 proportion of a normal distribution is located between the mean and z = -0.47?

A:

Q: Define the sampling distribution of the sample mean for normal population when the variance is known

A: Let sampling distribution for normal population when the variance is known is Nμ,σ2. The sampling…

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: What is the difference between a normal and binomial distribution?

A: Statistics uses normal distributions more often than binomial distributions most of the time.…