L. MULTIPLE CHOICE: Choose the letter that corresponds to the correct answer.1. Defined as a numerical quantity that is assigned to the outcome of an experiment.functiona domainc ranged. random variabledescribes the occurrence of ab.2. Complete the statement The activity or also known as anprobability.b. experimenta exchangespaceC.exponentd.sample3. What is the collection of random variables upon listing?b.experimenta exchangespaceC.exponentd.sample4. Let H for the heads, T for the tails, what are the values of random variable H in tossing two coins?c 0. 1, 20.a.5. What is the sample space of 4?ITHI THC.a.b.RITA P6. A basket contains 10 ripe and 4 unripe bananas If three bananas are taken from the basket oneafter the other, determine the possible values of getting the ripe ones (R) Let R for the ripe. U for thed. Q.1,2,3b 1.27. His a quantitative variable whose value depends on change.0.a.C 3a domainb functionranged. random vanable8 His a variable that can assume only countable number of values.c.ranged randomb.9 His a variable that can assume infinite number of values in one or more intervalsa.discreteSTROTTUTnC Tanged randoma discreteb.10 Which refers to a variable that assumes numerical values associated with the events of an

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Description: L. MULTIPLE CHOICE: Choose the letter that corresponds to the correct answer.1. Defined as a numerical quantity that is assigned to the outcome of an experiment.functiona domainc ranged. random variabledescribes the occurrence of ab.2. Complete the

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Math

Statistics

1. Defined as a numerical quantity that is assigned to the outcome of an experiment. b. function a domain range d. random variable

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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Let x be a random variable that represents the batting average of a professional baseball player. Let y be a random variable that represents the percentage of strikeouts of a professional baseball player. A random sample of n = 6 professional baseball players gave the following information. x 0.336 0.296 0.340 0.248 0.367 0.269 y 3.2 7.5 4.0 8.6 3.1 11.1 (b) Use a 10% level of significance to test the claim that ρ ≠ 0. (Use 2 decimal places.) t critical t ± (d) Find the predicted percentage of strikeouts for a player with an x = 0.288 batting average. (Use 2 decimal places.) %(e) Find a 95% confidence interval for y when x = 0.288. (Use 2 decimal places.) lower limit % upper limit % (f) Use a 10% level of significance to test the claim that β ≠ 0. (Use 2 decimal places.) t critical t ± (g) Find a 95% confidence interval for β and interpret its meaning. (Use 2 decimal places.) lower limit upper limit please show steps and work
1. Identify if the following scenarios describe a discrete or continuous random variable. Explain your choice. (a) X = The number of persons in an emergency room 181screte (b) W = The weights of delivery trucks at a supermarket. Lconinaas (c) H= The areas of houses being built in a new subdivision. 2. Faith is a 95% free throw shooter. At practice, each player shoots 20 free throws. L X the number of free throws Faith makes out of 20 shots. (a) Explain why X is a binomial random variable. (b) Calculate the mean of X. (c) Calculate the standard deviation of X. (d) Use the binomial probability formula to find P(X = 19). Interpret this value in context. (e) Her coach says that he will let the team out of practice early if Faith makes 18 or me free throws. What is the probability that practice ends early? Show your work. 2017 BFW Publishers Starnes/Tabor Statistics and Probability with Applications 3/e
2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:
A random variable which can take any value in an interval is called a a. continuous random variable. O b. discrete random variable. O c. statistic. O d. outcome.
A fair coin is tossed three times. Let X denote 0 or 1 according as a head or a Tail occurs onthe first toss, and let Y denote the number of heads which occur. Determine the following: a. the distribution of X and Y;b. E(X) and E(Y);c. Variance and SD of X; andd. Variance and SD of Y
In an annual poll about consumption habits, telephone interviews were conducted for a random sample of 1,014 adults aged 18 and over. One of the questions was, "How many cups of coffee, if any, do you drink on an average day?" The following table shows the results obtained. Number ofCups per Day Number ofResponses 0 365 1 264 2 193 3 91 4 or more 101 Define a random variable x = number of cups of coffee consumed on an average day. Let x = 4 represent four or more cups. (a) Develop a probability distribution for x. (Round your answers to three decimal places.) Number ofCups per Day f(x) 0 1 2 3 4 or more (b) Compute the expected value of x. (Round your answer to three decimal places.) E(x) = (c) Compute the variance of x. (Round your answer to three decimal places.) Var(x) = (d) Suppose we are only interested in adults who drink at least one cup of coffee on an average day. For this group, let y = the number of cups of…
5. Which of the following is an example of a discrete random variable? A. The height of mongo plants in a field measured within 3 months B. The number of siblings of Grade 11 students of DQBSNHS C. The weight of newborn babies around the world daily D. Volume of water in tanks among households of San Fernando 6. Which of the following equipment provides a discrete variable? A. Bill Counter B. Stethoscope C. Thermometer D. Voltmeter 7. What is the sum of all the probabilities of a simple event? A.O В. 1 C.2 D. 3 A. 0 8. When a certain event is sure to happen, then what is its probability? A. O В. 1 C.2 D. 3 9. When a certain event will not really happen, then what is its probability? A.O В. 1 C. 2 D. 3 10. What is/are the possible value/s of the random variable X if X is the number of heads in tossing a coin? A. (0) B. (0,1) C. (0,1,2) D. (0,1,2,3) 11. What is/are the possible value/s of the random variable Y if Y is the number of fails in tossing two coins? A. (0) B. (0,1) C. (0,1,2)…
ASK YOUR TEACHER Nationally, about 11% of the total U.S. wheat crop is destroyed each year by hail.t An insurance company is studying wheat hail damage claims in a county in Colorado. A random sample of 16 claims in the county reported the percentage of their wheat lost to hail. 14 7 10 11 12 19 14 11 9 8 23 19 13 7 10 7 The sample mean is x = 12.1%. Let x be a random variable that represents the percentage of wheat crop in that county lost to hail. Assume that x has a normal distribution and a = 5.0%. Do these data indicate that the percentage of wheat crop lost to hail in that county is different (either way) from the national mean of 11%? Use a = 0.01. (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? O Ho: H = 11%; H,: µ 11%; right-tailed O Ho: H + 11%; H,: u = 11%; two-tailed O Ho: H = 11%; H,: u + 11%; two-tailed (b) What sampling distribution will you use? Explain the rationale for your…
Determine whether the value is a discrete random variable, continuous random variable, or not a random variable. a. The number of hits to a website in a day b. The weight of a T-bone steak c. The gender of college students d. The number of statistics students now reading a book e. The number of textbook authors now sitting at a computer f. The number of people in a restaurant that has a capacity of 200 a. Is the number of hits to a website in a day a discrete random variable, a continuous random variable, or not a random variable? O A. It is a continuous random variable. O B. It is a discrete random variable. O C. It is not a random variable Clear all FirN check View an example Get more help - Help me solve this Copyright © 2022 Pearson Education Inc. All rights reserved. I Terms of Use | Privacy Policy I Permissions | Conta 80°F Mostly cloudy ere to search hp
3. We are throwing a die twice. Find the distribution of the random variable |X – Y|= (difference of scored points). Find its mean value and variation. [Ans. E(|X – Y|) = 1,94 ]
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