4. Nine probability density graphs of a random variable are given. Select the correctstatements:4.1.2.3.6.☐ Random variable described in No. 1 is bimodal.9.im☐ Random variable described in No. 1 is normally distributed.Random variable described in No. 2 is symmetric.ㅁㅁRandom variable described in No. 6 is uniformly distributed.Random variable described in No. 2 is positively skewed.5. Determine which measures are measures of central tendency

Statement 1 is true because from the plot 1, there are two peaks. So the distribution has two modes.…

Answered: 4. Nine probability density graphs of a…

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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1. A population consists of the two numbers (7, 8). Consider all possible samples of size 2 that can be drawn with replacement from this population. Find the following: a. The mean of the sampling distribution of means b. The variance of the sampling distribution c. The standard deviation of the sampling distribution of means. d. Illustrate the probability histogram of the sampling distribution of the means.
Suppose that the speed at which cars go on the freeway is normally distributed with mean 78 mph and standard deviation 9 miles per hour. Let X be the speed for a randomly selected car. a. What is the distribution of X? X N( b. If one car is randomly chosen, find the probability that it is traveling more than 75 mph. Round to 4 decumal places. c. If one of the cars is randomly chosen, find the probability that it is traveling between 81 and 87 mph. Round to 4 decimal places.
M2.T1: Discrete Random Variable X ✰ uncc.realizeithome.com/RealizeitApp/Student.aspx?Token=fLs7iBaxWamSul6X8DoLQSEYK9UsQnOi0g9kaKopLTlfl6OcYvkiH9eFMpPKgHMkr20BtjXKb4xVDrbunDyK2HWavBF4jL2K4W4pXaznaQ... ☆ The University of N... it f Elements of Statistics / Discrete Random Variables / Learn: Probability Distributions for Discrete Random Variables Lesson path + 1. Random Variable Notation 2. Example Question 1 3. Example Question 2 4. Mean or Expected Value my.charlotte.edu 5. Example Question 3 Realizeit for Student Learn: Probability Distributions for Discrete Random Variables 62°F Clear Tutoring | Universit... X Question 3 Answered: Suppose you play a ga X + Microsoft Office Ho... Pt Periodic Table Suppose you play a game with a biased coin. You play each game by tossing the coin 3 once. P(heads) = and P(tails). If you toss a head, you pay $11. If you toss a tail, you win $6. if you play this game many times, will you come out ahead? (i.e. will you gain extra money from playing this…
1.A personnel manager is employed in a corporation. Each month she must review 16 of the employees. From past experience, she has found that the reviews take her approximately four hours each to do with a population standard deviation of 1.2 hours. Let X be the random variable representing the time it takes her to complete one review. Assume X is normally distributed. Let X be the random variable representing the mean time to complete the 16 reviews. Assume that the 16 reviews represent a random set of reviews.Find the 95th percentile for the mean time to complete one month's reviews. (a) Sketch the graph.(b) Give the 95th Percentile. (Round your answer to two decimal places.)
3. An article by S. M. Berry titled “Drive for Show and Putt for Dough (Chance, Vol 12(4), pg 50-54)” discussed driving distances of PGA players. The mean distance for tee shots on the 1999 men’s PGA tour is 272.2 yards with a standard deviation of 8.12 yards. Assuming that the 1999 tee-shot distances are normally distributed, find the percentage of such tee shots that went a. between 260 and 280 yards. b. more than 300 yards. 4. Do Exercise 6.103 on page 288 in the textbook. Show work. (image attached) 5. Refer to question 3 in this homework. The article “Drive for Show and Putt for Dough (Chance, Vol 12(4), pg 50-54)” discussed driving distances of PGA players. The mean distance for tee shots on the 1999 men’s PGA tour is 272.2 yards with a standard deviation of 8.12 yards. Assuming that the 1999 tee-shot distances are normally distributed answer the following questions: a. Determine the quartiles of the driving distances b. Find the 95th percentile. c. Obtain the third decile (i.e.…
6.3.10 Question Help Three randomly selected households are surveyed. The numbers of people in the households are 2, 7, and 12. Assume that samples of size n 2 are randomly selected with replacement from the population of 2, 7, and 12. Construct a probability distribution table that describes the sampling distribution of the proportion of even numbers when samples of sizes n 2 are randomly selected. Does the mean of the sample proportions equal the proportion of even numbers in the population? Do the sample proportions target the value of the population proportion? Does the sample proportion make a good estimator of the population proportion? Listed below are the nine possible samples. 2,2 2,7 2,12 7,2 7,7 7,12 12,2 12,7 12,12 Construct the probability distribution table. Sample Proportion Probability Type an integer or fraction.) Enter your answer in the edit fields and then click Check Answer. parts remaining Clear All Check Answer Activate Windows
6.3.10 Question Help ▼ Three randomly selected households are surveyed. The numbers of people in the households are 1, 4, and 10. Assume that samples of size n =2 are randomly selected with replacement from the population of 1, 4, and 10. Construct a probability distribution table that describes the sampling distribution of the proportion of odd numbers when samples of sizes n = 2 are randomly selected. Does the mean of the sample proportions equal the proportion of odd numbers in the population? Do the sample proportions targe the value of the population proportion? Does the sample proportion make a good estimator of the population proportion? Listed below are the nine possible samples. 1,1 1,4 1,10 4,1 4,4 4,10 10,1 10,4 10,10 2 Construct the probability distribution table. Sample Proportion Probability (Type an integer or fraction.)
3. Yoonie is a personnel manager in a large corporation. Each month she must review 16 of the employees. From past experience, she has found that the reviews take her approximately four hours each to do with a population standard deviation of 1.2 hours. Let X be the random variable representing the time it takes her to complete one review. Assume X is normally distributed. Let X be the random variable representing the mean time to complete the 16 reviews. Assume that the 16 reviews represent a random set of reviews.Find the 95th percentile for the mean time to complete one month's reviews.
17. Each full carton of Grade A eggs consists of 1 randomly selected empty cardboard container and 12 randomly selected eggs. The weights of such full cartons are approximately normally distributed with a mean of 840 grams and a standard deviation of 7.9 grams. a. What is the probability that a randomly selected full carton of Grade A eggs will weigh more than 850 grams? The weights of the empty cardboard containers have a mean of 20 grams and a standard deviation of 1.7 grams. It is reasonable to assume independence between the weights of the empty cardboard containers and the weights of the eggs. It is also reasonable to assume independence among the weights of the 12 eggs that are randomly selected for a full carton. Let the random variable X be the weight of a single randomly selected Grade A egg. b. What is the mean of X? C. What is the standard deviation of X?
2 part for uniform distr.

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