In the normal distributionSelect one:O a. 68% of the data values fallwithin one standard deviation ofthe meanO b. 99% of the data fall within 2standard deviation of the meanc. 90% of the data fall within 3standard deviation of the meanO d. 50% of the data values fallwithin one standard deviation ofthe mean

Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Answered: In the normal distribution Select one:…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The distribution is used when the population distribution is normal and Select one: O a. Both a and b are correct. O b. When the sample size is more than 30. O c. When sample size is less than 30 and the population standard deviation is not known. O d. The population standard deviation is also known.
Determine whether the normal distribution can be used to compare the following population proportions. n₁ = 33, n₂ = 46, 1 = 0.818,2 0.913 Step 1 of 2: Calculate the four values n₁₁, n₁ (1-1), n22, and n2 (1-2). Round your answers to three decimal places, if necessary.
Oil field studies have shown that permeability measurements are having a normal distribution with a mean of 68 µD and a standard deviation of 10 µD. Determine the permeability that is exceeded by 90% of the samples. Select one: O a. 80.9 O b.55.1 C. 80.8 O d. 55.2
Suppose student test scores for a nationwide standardized test have an unknown distribution with mean 230 and standard deviation 34 points. A sample of size n=45 is randomly taken from the population and the mean is taken. Using the Central Limit Theorem for Means, what is the standard deviation for the sample mean distribution? Select the correct answer below: A. 0.76 B. 5.07 C. 6.34 D. 7.60 E. 8.62 34.00
In a normal distribution, ____ of the distribution lies within one standard deviation of the mean. 50%. 68%. 95%. 99.7%.
This assignment is worth 1 points. The extra point will be added to your overall course grade. For example: if you receive an 88% in the course you can receive up to 1 point giving you a new score of 89%. The following rubric will be used. 0.25 point for drawing the normal distribution curve with the mean value labeled on the curve and the appropriate area shaded. 0.25 point for determining the value of the standard deviation of the sample mean. 0.5 point for finding the correct probability. All work must be shown in order to receive any credit. Please upload your completed assignment here. The length of time taken on the SAT for a group of students is normally distributed with a mean of 2.5 hours and a standard deviation of 0.25 hours. A sample size of n = 60 is drawn randomly from the population. Find the probability that the sample mean is between two hours and three hours.
14 26 38 50 62 74 86 Based on the graph of this normal distribution, a. The mean is b. The standard deviation is c. 68% of the data values are between and d. 95% of the data values are between and e. 99.7% of the data values are between and 00
35 41 47 53 59 65 71 Based on the graph of this normal distribution, a. The mean is b. The standard deviation is c. 68% of the data values are between and d 05% of the data values -re bot weon
The degrees of freedom used when testing two independent samples where the population standard deviation is unknown is Group of answer choices a.n1 + n2 - 2. b.the smaller of n1 - 1 or n2 - 1. c.n1 + n2 - 1. d.the larger of n1 - 1 or n2 - 1.
A subway train arrives every eight minutes during rush hour. We are interested in the length of time a commuter must wait for a train to arrive. The time follows a uniform distribution. a. Find the mean, μ = b. Find the standard deviation, σ = Round to the nearest tenth.
Given Samples A and B below, Sample A: 4.9 4.6 4.8 2.7 4.2 2.0 2.1 3.1 5.0 Sample B: 3.2 2.4 3.8 4.2 4.9 5.0 3.6 4.4 2.3 a. Calculate the mean and standard deviation for each sample. Sample A: X A = 0.00; s A = 0.00 Sample B: x B= 0.00 ; s B = 0.00 Round to two decimal places if necessary b. Calculate the coefficient of variation for each sample. Sample A: CV A = 0.00% Sample B: CV B = 0.00% Round to two decimal places if necessary c. Which sample is more variable? Sample A Sample B Neither sample is more variable than the other

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