A sample of size 19 will be drawn from a population with mean 7 and standard deviation 5.(a) Is it appropriate to use the normal distribution to find probabilities for X?(b) If appropriate find the probability that x will be greater than 6.(c) If appropriate find the 10"n10thpercentile of x.O It is appropriate to use the normal distribution to find probabilities for x.The probability that X will be greater than 6 isThe 10" percentile of x isO It is not appropriate to use the normal distribution to find probabilities for X.-

Given sample of size 19 mean 7 standard deviation 5.

Answered: a) Is it appropriate to use the normal…

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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K- The average number of acres burned by forest and range fres in a large county is 3,800 acres per year, with a standard deviation of 550 acres. The distribution of the number of acres burned is normal a Compute the probability that more than 4,000 acres will be burned in any year b. Determine the probability that fower than 3,000 acres will be burned in any year What is the probability that between 2,500 and 3,400 acres will be burned? d in those years when more than 4,500 acres are burned, help is needed from eastern region fire teams Determine the probability help will be needed in any year CRED
Suppose the probability distribution of x, the number of defective tires on a randomly selected car checked at a certain inspection station, is given in the following table. 이 p(x) 0.60 0.14 0.05 0.03 0.18 X 0 1 (a) Calculate the mean value of x. 2 3 4 (b) What is the probability that x exceeds its mean value?
A collection of numbers is Normal with a Mean of 20 and a Standard Deviation of 5; that is N(20,5). Boris’s score is 23.7 and Bela’s score is 26.2. What is the probability that a score is greater than Boris and less than Bela? Your final answer should be correct to 3 places after the decimal point. ________
What does the central limit theorem say about the shape of the distribution of the sample means? O The distribution will be approximately normal when the sample size is large. The distribution will be approximately normal when the standard deviation of the sample means is the same as the population standard deviation. O The distribution will be approximately normal when the sample size is small. The distribution will be normal when all sample means within 2 standard deviations of the actual mean are considered. O The distribution will be approximately normal regardless of sample size.
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what is the mean number of devices per account what is the standard deviation of the distribution what is the probability that the number of devices in a randomly selected account lies within one standard deviation of the mean
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I. TRUE OR FALSE. Choose A if the statement is always true, otherwise choose B. 1. The sum of the probabilities of all values of the random variable must be equal to 1. 2. The capacity of water dams in a region is an example of continuous random variable. 3. The formula u = is used to compute for the mean of a probability distribution. IxF(x) 4. A standard normal curve is a normal probability distribution that has a mean of one and standard deviation of one 5. The width of the curve in normal distribution is determined by the mean of the distribution. 6. The mean of the sampling distribution of the sample means is less than the population mean. 7. The standard error of the mean is the standard deviation of the sampling distribution of the sample means. 8. The sampling variability of the sample means becomes smaller as the sample size n gets larger. 9. In estimating the mean, the degrees of freedom is equal to (n - 1) when using the t- distribution. 10. The t-distribution is asymmetric…
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A. Today, the waves are crashing onto the beach every 5.5 seconds. The times from when a person arrives at the shoreline until a crashing wave is observed follows a Uniform distribution from 0 to 5.5 seconds. Round to 4 decimal places where possible. The mean of this distribution is The standard deviation is The probability that it will take longer than 2.6 seconds for the wave to crash onto the beach after the person arrives is P(x ≥≥ 2.6) = B. For the standard normal distribution, find the value of c such that:P(z > c) = 0.3966
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Write YES if the statement is true about the z-distribution and NO if it's not. 1. The z-distribution is a normal distribution witha mean of 0 and standard deviation of 1 2. The normal curve is bell-shaped 3. The tails of a normal curve approach the vertical axis but never touch it.

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