Texting: Five teenagers are selected at random. Let X be the number of them who have senttext messages on their cell phones within the past 30 days. According to a study by theNielsen Company, the probability distribution of X is as follows:01234XP(x)a. Find P (2).b. Find P (More than 1).50.015 0.097 0.258 0.343 0.227 0.060

From the given informationThe probability distribution of X is given as…

Answered: Texting: Five teenagers are selected at…

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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A ballet instructor is interested in knowing what percent of each year's class will continue on to the next, so that she can plan what classes to offer. Over the years, she has established the following probability distribution. Let X = the number of years a student will study ballet with the teacher. Let P(x) = the probability that a student will study ballet x years. Complete the table below using the data provided. (Enter exact numbers as integers, fractions, or decimals.) P(x) x*P(x) 1 0.10 2 0.10 3 0.10 4 0.30 6 0.20 7 0.05 Additional Materials O Reading
Use the data in the table below, which shows the employment status of individuals in a particular town by age group.A person from the town is randomly selected; what is the probability that the individual is employed full-time, given that he or she is between 18 and 49 years of age? Full-time Part-time Unemployed 0-17 24 164 371 18-25 185 203 148 26-34 348 62 27 35-49 581 179 111 50+ 443 162 173
In a 1-pound bag of skittles the possible colors were red, green, yellow, orange, and purple. The probability of drawing a particular color from that bag is given below. Is this a probability model? Answer Yes or No. Color Probability Red 0.2299 0.1908 0.2168 0.1889 0.1816 Green Orange Yellow Purple OYes O No
There are 6 radar stations and the probability of a single radar station detecting an enemy plane is 0.35. Identify the type of histogram for the probability distribution. P(r) 0.50 0.40 0.30 0.20 0.10 0.075 0 0.244 1 e. skewed left 0.328 2 0236 3 O a. symmetric O b. skewed right O c. uniform or rectangular Od. none of these choices 0.095 4 0.020 0.002 5 6 Number of radar stations r
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Each unit of a product produced and sold earns a profit of $ 50 and un- $ 30. The probability distribution is given below : sold units result into a loss of Units Demanded : 1 2 3 0.3 Probability () Compute how many units should be sold to earn maximum profit, and (i) Calculate EPPI and EVPI. : 0.2 0.2 0.25
Do you carpool? Let X represent the number of occupants in a randomly chosen car on a certain stretch of highway during morning commute hours. A survey of cars showed that the probability distribution of X is as follows. x 1 2 3 4 5 Px 0.63 0.13 0.11 0.02 0.11 (a) Find P2 . .
An examination has historical record of a 25% rate of failure.For a group of 15 students sitting for the exam,calculate the probability that:a. A minimum of 12 will succeed. b.All individuals will successfully complete the exam.
Find the mean of the given probability distribution. A police department reports that the probabilities that 0,1,2 and 3 burglaries will be reported in a given day are 0.48,0.41,0.10,and 0.01 respectively.
The following table shows 50 students classified according to the grades obtained in Statistics. If a student is selected at random from the 50 students, Grades A B C Boys 15 10 9 Girls 7 5 4 Find the probability that the student selected: i. Is a girl or has a grade A ii. Is a boy or has a grade B iii. Is a girl or has a grade C
Assume that 12 jurors are randomly selected from a population in which 76% of the people are Mexican- Americans. Refer to the probability distribution table below and find the indicated probabilities. P(a) 0+ 1 0+ 0+ 0.0003 4. 0.0018 0.0092 6. 0.034 7 0.0924 8 0.1828 9. 0.2573 10 0.2444 11 0.1407 12 0.0371 Find the probability of exactly 5 Mexican-Americans among 12 jurors. P(x = 5) = 0.0092 Find the probability of 5 or fewer Mexican-Americans among 12 jurors. P(x < 5) = 3205 Does 5 Mexican-Americans among 12 jurors suggest that the selection process discriminates against Mexican-Americans? yes O no Question Help: O Message instructor Submit Question 12 MAR tv 19 MacBook Air 11 F4 F5 F7
How many different ways are there to select a group of 4 out of 8 people for a survey?

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