Find standard deviation normal distribution
Normal Distribution Definition
Suppose that the distribution of X is normal with a mean of 100 and a standard deviation of 16—that is, X is N(100, 16). Jessica is a 12-year-old and has an IQ score of 132.We would like to determine the proportion of 12-year olds that have IQ scores less than Jessica’s score of 132.
[DOC File]THE NORMAL DISTRIBUTION: HOMEWORK
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The lengths of certain items follow a normal distribution with mean ( and standard deviation 6 cm. It is known that 4.78% of the items have a length greater than 82cm. Find the value of the mean (.
[DOC File]Chapter : The Normal Distribution
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The Normal Distribution: Homework. Exercise 1. According to a study done by De Anza students, the height for Asian adult males is normally distributed with an average of 66 inches and a standard deviation of 2.5 inches.
[DOC File]Z-Score Practice Worksheet
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For example, compute the mean or the standard deviation. Form the distribution of values of that sample statistic. If the sample sizes were sufficiently large, usually 100 will do, the distribution of those sample statistics will always be approximately normal. Two types of problems you'll encounter involving the Normal Distribution: 1.
[DOC File]A Level Mathematics Questionbanks
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How do you find the mean of a binomial distribution? How do you find the expected value of a binomial distribution? How do you find the standard deviation of a binomial distribution? When combining to random variables, X and Y, by addition, what is the mean of X+Y? What is the standard deviation of X+Y? Answer these questions for subtraction.
[DOC File]Application of Normal Probability Distribution
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8.89 7.07 7.99 4.32 Questions 16 – 18 refer to the following: The length of time to find a parking space at 9 A.M. follows a normal distribution with a mean of 5 minutes and a standard deviation of 2 minutes.
[DOC File]THE NORMAL DISTRIBUTION: HOMEWORK
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16cm long, and 15% of the worms are less than 10cm long. Find, to 2 decimal places, the standard deviation of . the lengths of the worms. [8] 10. The examination results of 11-year-old children on a particular test can be assumed to have a normal . distribution with mean 100 and standard deviation . a) Give two. reasons why this can only be an ...
[DOCX File]Binomial, Geometric, and Normal Distributions
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A normal distribution of scores has a standard deviation of 10. Find the z-scores corresponding to each of the following values: A score of 60, where the mean score of the sample data values is 40.
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