Determine whether the following value is a continuous random variable, discrete random variable, or not a random variable.a. The amount of rainfall in a country in a yearb. The last book a person in City A readc. The time it takes to drive from City A to City Bd. The weight of a hamburgere. The number of people with blood type B in a random sample of 32 peoplef. The number of home runs in a baseball gamea. Is the amount of rainfall in a country in a year a discrete random variable, continuous random variable, or not a random variable?O A. It is a discrete random variable.O B. It is a continuous random variable.OC. It is not a random variable.b. Is the last book a person in City A read a discrete random variable, continuous random variable, or not a random variable?O A. It is a discrete random variable.O B. It is a continuous random variable.O C. It is not a random variable.c. Is the time it takes to drive from City A to City Ba discrete random variable, 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.d. Is the weight of a hamburger a discrete random variable, continuous random variable, or not a random variable?O A. It is a discrete random variable.O B. It is a continuous random variable.O C. It is not a random variable.MacBook Pro->G Search or type URLesc@$%123.4QWEYtabАSFHcaps lockW #くO

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Answered: Determine whether the following value…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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To find out approximately how many hours its residents are spending playing cards at a senior retirement home, the recreation director conducts a random survey. The table below shows the number of hours per week these randomly selected seniors play cards. Hours Seniors Play Cards Senior Citizen Hours Played Joe 12 Mary 3 Bert 5 Frank 9 Elizabeth 11 Janet 4 What is the estimated number of hours all seniors at this retirement home play cards, the population mean, based on the sample and rounded to the nearest whole hour? a 7 hours b 8 hours c 9 hours d 10 hours
1. Which of the folowing is a discrete random variable? a. the average amount of electricity consumed b. the of patients in a hospital c. the amount of paint used in repainting a building d.the average weight of female athlets
What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care):
Problem Solving. Solve the following problems. No immediate rounding. Round off final answers to three decimal places. A protective enchantment which alerts the Charms professor when a death eater attacks a magical school is designed to have a 90% reliability rate. Suppose that the nine magical schools equipped with this enchantment experienced an attack from the death eaters. Define the random variable X as the number of Charms professors alerted out of nine. Assuming that protective enchantment alerts are independent 1. Write down the associated PMF of X. 2. Compute for the probability of alerting at least 7 Charms professors.
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
A sports franchise knows that 81% of their season ticket holders attend every home game. The collect a random sample of size 250 from among last year's season ticket holders. How likely are they to find that 200 or fewer attended every home game? a. .657 b. .800 c. .343 d. .500
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A population of the values 2, 4, and 7. List down all the possible samples of size 2 which can be drawn from this population. Find the following: 1. List all of the possible sample of size of 2. 2. Compute the mean of each sample 3. Identify the probability of each sample 4. Illustrate the histogram
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)…
a. The symbol for the random variable involved in this problem is ? v b. The wording for the random variable in context is as follows: Select an answer c. The symbol for the parameter involved in this problem is ? v d. The wording for the parameter in context is as follows: Select an answer
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…
In a survey conducted by a reputable marketing agency, 231 of 1000 adults 19 years of age or older confessed to bringing and using their cell phone every trip to the bathroom (confessions included texting and answering phone calls). Complete parts (a) through (f) below. D. The sample size is large. E. Its value may change depending on the individuals in the survey. What is the source of variability in the random variable? A. The sample size B. The individuals selected to be in the study C. The question asked in the survey D. The marketing agency (e) Construct and interpret a 95% confidence interval for the population proportion of adults 19 years of age or older who bring their cell phone every trip to the bathroom. Select the correct choice below and fill in any answer boxes within your choice. (Type integers or decimals rounded to three decimal places as needed. Use ascending order.) OA. There is a % probability the proportion of adults 19 years of age or older who bring their cell…

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