19. The mean of a standard normal curve is 1. *TRUEO FALSE20. If something has probability of 1,000%, it is sure to happen. *OOTRUEO FALSE

It is given that the statement about to the standard normal curve. Note: According to Bartleby…

Answered: 19. The mean of a standard normal curve…

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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III. A set of data has a normal distribution with a mean of 5.1 and a standard deviation of 0.9. 1. Complete the following normal curve with the appropriate x-values and z-scores. 2. Determine the probability of the following. a. P(x 5.8)* c. P(4.3 < x < 5.3)*
3. Let Y,,. , Y, be a random sample from a normal distribution with mean 30 and standard deviation 3. What is the probability the largest observation is greater than 30?
find the value of the probability of the standard normal variable Z corresponding to the shared area under the standard normal curve.
6. Find z such that 85.3% of the standard normal curve lies to the left of z.
10 points Q/ In the vehicle speed test, the results are given in the table below: Find 1. Arithmetic mean 2. Standard deviation 3. Skew coefficient 4. Kurtosis coefficient Speed range (km/hr Speed range (km/hr Speed range (km/hr Frequency(fi) Frequency(fi) Frequency(fi) 34-35.9 44-45.9 22 54-55.9 13 36-37.9 46-47.9 8 56-57.9 38-39.9 4 48-49.9 18 58-59.9 6. 40-41.9 10 50-51.9 17 60-61.9 42-43.9 7 52-53.9 16 62-63.9 3 add file
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5. Find the following probabilities for the standard normal curve.
7.2.29 Question Help Assume the random variable X is normally distributed with mean u= 50 and standard deviation a = 7. Compute the probability. Be sure to draw a normal curve with the area corresponding to the probability shaded. P(55 sXs 68) Click the icon to view a table of areas under the normal curve. 50 55 68 50 55 68 50 55 68 P(55 sXs 68) -1943 (Round to four decimal places as needed.)
Suppose X has a normal distribution with mean 80 and standard deviation 5. What type of variable is X? Group of answer choices discrete and finite discrete and countably infinite continuous and countably infinite continuous and uncountably infinite (I AM NOT SURE IF IT IS C OR D SO I NEED HELP!)
6. The average time to run the 5K fun run is 24 minutes and the standard deviation is 2.4 minutes. 12 runners are randomly selected to run the 5K fun run. Round all answers to 4 decimal places where possible and assume a normal distribution. What is the distribution of X? X ~ N(?,?) What is the distribution of x¯? x¯ ~ N(?,?) What is the distribution of ∑x? ∑x ~ N(?,?) If one randomly selected runner is timed, find the probability that this runner's time will be between 23.6608 and 24.4608 minutes? For the 12 runners, find the probability that their average time is between 23.6608 and 24.4608 minutes? Find the probability that the randomly selected 12 person team will have a total time less than 277.2? For part e) and f), is the assumption of normal necessary? Yes or No The top 20% of all 12 person team relay races will compete in the championship round. These are the 20% lowest times. What is the longest total time that a relay team can have and still make it to the championship…

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19. The mean of a standard normal curve is 1. * O O FALSE TRUE