Fifteen items or less: The number of customers in line at a supermarket express checkout counter is a random variable with the following probabilitydistribution.0 134 5P(x) 0.05 0.25 0.30 0.20 0.10 0.10Send data to ExcelPart 1 of 3(a) Compute the mean Hy. Round the answer to two decimal places.Part: 1/32Part 2 of 3(b) Compute the standard deviation a. Round your answer to 4 decimal places if necessary. Dirty air: The federal government has enacted maximum allowable standards for air pollutants such as ozone. Let X be the number of days per year that thelevel of air pollution exceeds the standard in a certain city. The probability distribution of X is given byX01234P(x) 0.34 0.39 0.17 0.06 0.04Send to ExcelPart: 0/2Part 1 of 2(a) Compute the mean y Round the answer to at least two decimal places.Part: 1/2Part 2 of 2(b) Compute the standard deviation d Round the answer to at least three decimal places

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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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enmath.com SCore: 27T S75 answered Question 4 Assume that 12 jurors are randomly selected from a population in which 81% of the people are Mexican- Americans. Refer to the probability distribution table below and find the indicated probabilities. P(x) 0+ 0+ 2. 0+ 3. 0+ 0.0004 0.0025 0.0123 0.0449 8 0.1195 0.2265 0.2897 11 0.2245 12 0.0798 Find the probability of exactly 6 Mexican-Americans among 12 jurors. P(x = 6) = Find the probability of 6 or fewer Mexican-Americans among 12 jurors. P(x < 6) = Does 6 Mexican-Americans among 12 jurors suggest that the selection process discriminates against Mexican-Americans? O no O yes Check Answer 12 étv MacBook Air 14567090
Does the following table represent the probability distribution for a discrete random variable? Explain your answer.
solve the following
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Summer Wine Sales 1000 2000 3000 4000 5000 0000 7000 Assume that the weekly summer wine sales at the local winery vary with a mean of u 2600 dollars and standard deviation o= 1300 dollars. The student is actually going to attend a wedding at the winery in August, and he is wondering what is the probability that the sales for that week will be more than 2500 dollars. Can he calculate this probability? O Yes O No
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Directions: During a certain part of the day, the time between arrivals of automobiles at the tollgate on a turnpike is an exponential random variable with expected value 30 seconds. 1. Find the probability that the time between successive arrivals is more than 70 seconds. Probability = 2. Find the probability that the time between successive arrivals is greater than 10 seconds and less than 50 seconds. Probability =
Prob-1 Probability that cars have been assembled in a particular plant as follows: P(plant1) =20%, P(plant2)=24%, P(plant3)=25%, P(plant4)=31%. Total number of cars manufactured by all plants: 1.2 million/year. Number of cars of no warranty claims manufactured by plant1: 223200/year. Compute the warranty claim rate of the cars assembled in plant1? C: warranty Claim rate NC: No warranty claim rate= 1- C P1 20% Total Cars Manufactured C = P2 NC 24% P3 P4 .% 25% 31% C NC C C Z NC .NC
R3
plz provide handwritten answer for part b
11 LL Complete parts (a) and (b) below. The number of dogs per household in a small town 11 Probability 0. 0.632 1. 0.228 3. 0.027 4. 0.014 0.092 11 (a) Find the mean, variance, and standard deviation of the probability distribution. Find the mean of the probability distribution. 11 p=(Round to one decimal place as needed.) 11 Find the variance of the probability distribution. 11 o = (Round to one decimal place as needed.) Find the standard deviation of the probability distribution. 58°F Su 查 0 同回 F10 F8 F11 7. 8. 6.
X 1 2 3. A physics professor wants to know what percent of physics majors will spend the next several years doing post-graduate research. He has the following probability distribution. 3 4 5 6 P(x) 0.35 0.20 0.15 0.10 0.05 x*P(x a. Define the random variable x. b. Define P(x), or the probability of x. c. Find the probability that a physics major will do post-graduate research for four years. P(x = 4) =_ d. Find the probability that a physics major will do post-graduate research for at most three years. P(x ≤ 3) =_ e. On average, how many years would you expect a physics major to spend doing post-graduate research?

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