A standardized test has a mean of 50 and a standard deviation of 4. Which of the following is the picture of the Normal Distribution curve?

Q: Quartering a positive mean (dividing by 4) has what effect on the normal curve?

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

Q: Show complete solution The distribution of heights of adult Filipino men is approximately Normal…

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Q: Under what conditions can the mean of the sample be treated as a value that is from a population…

A: From the above data  under what conditions can the mean of the sample be treated as a value that is…

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: In a Normal distribution 7% items are under 35 and 89% are under 63. Find its mean and standard…

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Q: About 68.2% of the scores fall within the normal curve, which ranges from 50 to 80 and is symmetric…

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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: A normal distribution has a mean of 175 and a standard deviation of 38. What percent of observations…

A: Given that A Normal distribution has Mean (μ) = 175 Standard deviation (σ) = 38   We know that Z =…

Q: In a normal distribution, 11% of the items are under 35 and 76% are under 83. Find the mean and…

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Q: The mean of a distribution is 14 and the standard deviation is 5.

A: Given information: The mean of the distribution is 14 and the standard deviation is 5. Formula for…

Q: When finding the percentage of data in a given section of the normal curve, you are finding the…

A: here use basic of normal distribution

Q: Scores on a common final exam are normally distributed with a mean of 66 and a standard deviation of…

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Q: The relative frequency histogram represents the length of phone calls on​ George's cell phone during…

A: A histogram is a visual representation of continuous data.

Q: A normal distribution has a mean of 62 and a standard deviation of 12. What is the median?

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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: What proportion of the scores in a normal distribution falls below z= -1.32?

A: Let X ~ N(0,1). Then, P(X<-1.32)=P(X>1.32)  [ As X is symmetric about…

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

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Q: For a standard normal curve, find the z-score that separates the bottom 70% from the top 30%.

A: Answer:- Given, a standard normal curve,               Find the z-score that separates the bottom…

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: In a normal distribution, mean is 60 and standard deviation is 5. How many of the cases have scores…

A: The probability between two specific numbers a and b in a normal distribution with mean μ and…

Q: Suppose that you are an elementary school teacher and you are evaluating the reading levels of your…

A: Solution

Q: In a normal distribution, find the mean when standard deviation is 6 and 3.75% of the area lies to…

A: From the provided information, Standard deviation (σ) = 6 3.75% of the area lies to the left of 85.…

Q: A normal distribution has a mean of 113 and a standard deviation of 6. Find the z-score for a data…

A: A normal distribution has a mean of 113 and a standard deviation of 6.

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

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Q: The weights of the native North American Blue Jay have a mean of 18.4 ounces with a standard…

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Q: a variable has a mean of 100 and a standard deviation of 36. Sixteen observations of this variable…

A: Given: n=16,μ=100,σ=36,x=115,s=24

Q: The mean value of land and buildings per acre from a sample of properties is $11,800, with a…

A: The objective of this question is to find the range of values within which approximately 99.7% of…

Q: Among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cups.…

A: Let X  denote the number of coffee drinks per day follows a normal distribution. That is, The…

Q: What proportion of a normal distribution is located between the mean and z = 2.00?

A: proportion of a normal distribution is located between the mean and z = 2.00

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: 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: Based on a recent study, the pH level of the arterial cord (one vessel in the umbilical cord) is…

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Q: Two tools commonly used to test how close the dispersion of data matches the distribution shape of a…

A: The normal distribution serves as a fundamental model for the distribution of many natural…

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: A normal distribution has a mean of 134 and a standard deviation of 6. Find the z-score for a data…

A: given datanormal distributionμ = 134σ = 6find z score for x = 132

Q: Students in the psychology department at General State University consumes an average of 7 sodas per…

A: We have to find correct answer..

Q: In a normal distribution, what percentage of scores falls below and score of -2.33

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Q: The average height of a female over age 20 is 63.6 inches. Assume the distribution of female heights…

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