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 room181screte(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. LX 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 mefree throws. What is the probability that practice ends early? Show your work.2017 BFW Publishers Starnes/Tabor Statistics and Probability with Applications 3/e

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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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I Classify the as Discrete or Continous Random Variable. Write J for Discrete and A for Continous on the space provided before each item.
The marketing manager of a large multinational corporation is concerned that some salespersons perform very well and others quite poorly. To help analyze the problem he draws a random sample of 20 salespersons, determines their commission incomes, and calculates the following statistics: x = $37.2, and s = $7.6. Use a 0.05 to test whether the population variance exceeds $35. Ho: o² ≤ 35 Ha: o² > 35 (A) Reject H。 if x² ≥30.1435 (B) Reject H₁ if x² ≥32.8523 (C) test statistic is 31.355 (D) Conclusion: Ho cannot be rejected
18.| Medical: Hemoglobin Count Let x be a random variable that represents hemoglobin count (HC) in grams per 100 milliliters of whole blood. Then x has a distribution that is approximately normal, with a population mean of about 14 for healthy adult women (see reference in Problem 17). Suppose that a female patient has taken 10 laboratory blood tests during the past year. The HC data sent to the patient's doctor are 15 18 16 19 14 12 14 17 15 11 i. Use a calculator with sample mean and sample standard deviation keys to verify that x = 15.1 and s 2.51. ii Does this information indicate that the population average HC for this %3D patient is higher than 14? Use a = 0.01. %3D
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Bill Alther is a zoologist who studies Anna's hummingbird (Calypteanna). A random sample of nine of these birds was caught, weighed, and released in a remote part of the Grand Canyon. The weights observed (in grams) were : 3.7 2.9 3.8 4.2 4.8 3.1 3.5 4.3 3.0 Let x be a random variable representing weights of Anna's hummingbirds in this part of the Grand Canyon. Assuming x has a normal distribution with sample standard
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A. Classify whether the given experiment implies a discrete random variable or a continuous random variable. Write D if discrete and C if continuous. ___________1. The temperature of a solution in the laboratory of San Sebastian School. ___________2. Collecting data about the heights of students in Grade 11 students. ___________3. Recording the distance travelled by the jeep. ___________4. Surveying about the number of cases due to Covid - 19 pandemic in Nueva Ecija. ___________5. Number of promoted students at the end of school year. ___________6. Getting the distance travelled by a car. ___________7. Collecting data about the weights of students in a certain school ___________8. The temperature in Science City of Munoz at noon times. ___________9. Picking a multiple of 3 less than 100. ___________10.Tallying the number of PUI (Person Under Investigation) due to Covid-19 pandemic B. An umbrella - check girl returns 2 umbrellas at random to 2 customers who had previously checked in,…
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following random 2. Let W be a random variable giving 1. Classify variables as discrete or continuous a. X: the number of automobile accidents per year in EDSA b. Y: the length of time to paly 18 holes of golf. c. M: the amount of eggs laid each month by a hen. d.P: the number of building permits issued each month in Camiling, the the number of heads minus the number of tails in three tosses of a coin. a. List all elements of the sample space S for the three tosses of the coin and to each sample point assign a value w of W. b. Find the probability distribution of the random variable W, assuming that the coin is biased so that a head is twice as likely Tarlac e. Q: the weight of grain produces per hectare. to occur as a tail. c. Compute for value, variance and standard deviation variabe W. the expected of the random
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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 (b) W = The weights of delivery trucks at a supermarket. lcominaan5 (c) H= The areas of houses being built in a new subdivision.