A normal distribution is informally described as a probability distribution that is "bell-shaped" when graphed. Draw a ough sketch of a curve having the bell shape that is characteristic of a normal distribution.

Q: For a standard normal distribution, find the probability that a value is greater than 1.56 standard…

A: Let Z is a standard normal distribution.  So the standard deviation here is 1 and the mean is 0.…

Q: Use a normal distribution to estimate the probability of more than 55 girls being born in 100…

A: Given that, The Mean and Standard deviation are, Check the conditions of normal approximation to…

Q: The probability of any one particular value in the normal distribution

A: The probability value always lies between 0 and 1 for any distribution.

Q: The reading speed of second grade students in a large city is approximately normal, with a mean of…

A: Given X is normal Distributed with mean µ = 90.0 and standard deviation σ = 10.0 now will using…

Q: Sketch a graph of a distribution that is positively skewed and state a real life example of when a…

A: Here we have sketch the graph of a distribution that is positively skewed  and have to state real…

Q: If a score is selected at random from a normal distribution, the probability that it will be between…

A: According to the given information in this question we need to find the given probability

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: In a bell curve distribution, the median is less than the mean and is located to the left of the…

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Q: The population mean annual salary for an electrician is $46,700.A random sample of 42 electricians…

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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: The center of a normal curve is the mean of the distribution. O is the standard deviation. O cannot…

A: Answer  The center of a normal curve is the mean of the distribution. It is a bell-shaped curve.…

Q: Find the probability for a normal

A: Requirement of the problem: P-1.20=Pz≤-1.20. Consider, Pz≤-1.20=0.1151, from the standard normal…

Q: A normal distribution curve has an egg shape when plotted. O True O False

A: Normal Distribution Curve The normal distribution is a symmetrical distribution function on both…

Q: For a standard normal distribution, find the probability that a value is greater than 0.68 standard…

A: value is greater than 0.68 standard deviations below the mean and less than 2.99 standard deviation…

Q: According to a study, the proportion of people who are satisfied with the way things are yo Complete…

A: Given Information: The proportion of people who are satisfied with the way things are going in their…

Q: A population of students watch an average of 7.13 hours of TV per week with a population standard…

A: It is given that the mean is 7.13 hours and the standard deviation is 3.29 hours.

Q: Suppose that a random variable z has a standard normal distribution. Use a standard normal table…

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Q: The normal curve: has only one peak, in the middle of the distribution. has multiple peaks in the…

A: The question is about normal distribution.Introduction :Normal distribution :1 ) It has two…

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

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Q: For a standard normal distribution, find the probability that a value is greater than 2.3 standard…

A: The probability that a value is greater than 2.3 standard deviations below the mean and less than…

Q: The sample standard deviation follows a normal distribution if the population follows a normal…

A: We know that- The population follows a normal distribution with mean and standard deviation, the…

Q: The reading speed of second grade students in a large city is approximately normal, with a mean of…

A:

Q: In a normal distribution, what is the probability that a random sample of 219 with population…

A: The given sample size is 219 and population proportion is 0.17.

Q: a. Reflect how normal distribution will be useful in your field? Give an application related to…

A: Normal distribution is one of the very important tools used in statistics. It helps to determine…

Q: Draw a smooth curve that represents a symmetric trimodal (three-peak) distribution.

A: Justification:Symmetric distribution:When the left and right sides of the distribution are…

Q: The standard normal curve is a normal probability distribution that has a mean of 1 and standard…

A: standard normal distribution:-x~N(μ,σ2) then z=x-μσ~N(μ=0,σ2=1)               ~N(0,1)is called…

Q: Why is it that the normal distribution is the most useful probability distribution?

A: Solution-: We want to get the reason why is it that the normal distribution is the most useful…

Q: Describe Simple Discrete Distributions?

A: The outcome of an set of data are distributed in two forms. They are continuous distribution and…

Q: Calculate power using the normal distribution?

A: Power of a test: The probability that not occurring the type II error is called power of the test.…

Q: Identify if its true or false For any normal distribution, the probability that the random variable…

A: Out aim is to identify the statement is true of false

Q: For a standard normal distribution, find the probability that a value is greater than 2.9 standard…

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Q: Obtain the characteristic function of the normal distribution. Deduce the first four central…

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Q: what makes the standard normal probability distribution unique. Please in details.

A: Standard Normal Probability distributions

Q: In Normal Distribution, The curve is not symmetric about the Mean Select one: O True O False

A: We have to find that the given statement is true or false.....