Suppose that a technology task force is being formed to study technology awareness among instructors.Assume that ten people will be randomly chosen to be on the committee from a group of 28 volunteers,20 who are technically proficient and eight who are not. We are interested in the number on thecommittee who are not technically proficient.a. In words, define the random variable X.b. List the values that X may take on.c. How many instructors do you expect on the committee who are not technically proficient?d. Find the probability that at least five on the committee are not technically proficient.e. Find the probability that at most three on the committee are not technically proficient.

Answered: Suppose that a technology task force is…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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58% of all statistics classes require a statistical calculator and 30% require the use of a computer that has statistical software. Of the classes that require a statistical calculator, 16% also require the use of a computer. If a statistics course is selected at random find: (round to 4 decimal places where possible) a. P(Statistical Calculator) = b. P(Statistical Software) = c. P(Require a Statistical Calculator and Statistical Software) = d. P(Require a Statistical Calculator GIVEN Require Statistical Software) =
A survey asks 1100 workers, "Has the economy forced you to reduce the amount of vacation you plan to take this year?" Forty-six percent of those surveyed say they are reducing the amount of vacation. Ten workers participating in the survey are randomly selected. The random variable represents the number of workers who are reducing the amount of vacation. Decide whether the experiment is a binomial experiment. If it is, identify a success, specify the values of n, p, and q, and list the possible values of the random variable x. Is the experiment a binomial experiment? No Yes What is a success in this experiment? Selecting a worker who is not reducing the amount of vacation Selecting a worker who is reducing the amount of vacation This is not a binomial experiment. Specify the value of n. Select the correct choice below and fill in any answer boxes in your choice. O A. n= B. This is not a binomial experiment. Specify the value of p. Select the correct choice below and fill in any answer…
Which of the following is not a random variable? The number of heads in ten tosses of a fair coin. The number of passengers in cars passing though a toll booth. The age of the driver in cars passing through a toll booth. The response of randomly-selected people to the question, “Did you eat breakfast this morning?” The response of randomly-selected people to the question, “How many hours of sleep did you get last night?"
55% of all statistics classes require a statistical calculator and 25% require the use of a computer that has statistical software. Of the classes that require a statistical calculator, 19% also require the use of a computer. If a statistics course is selected at random find: (round to 4 decimal places where possible) a. P(Statistical Calculator) = b. P(Statistical Software) = c. P(Require a Statistical Calculator and Statistical Software) = d. P(Require a Statistical Calculator GIVEN Require Statistical Software) =
Determine how many possible values there are for the following discrete random variable: sum of your next roll of two die. Select one: a. 6 b. 11 C. 12 O d. 36
Which of the following is the domain of a random variable? Choose the correct answer: a. set of whole numbers b. sample space c. set of real numbers d. subset of the outcomes of the experiment
Choose the letter that corresponds to the correct answer Which of the following is an example of dicrete variables? a. Weight of students b. Number of purple marble in the basket I. с. Distance travelled between tricycles d. Height of the students in a certain class I. Which are the possible values of the random variable for the number of heads when you toss two coins а. 0,1,2,3 b. 1,2,3 с. 0,1 d. 0,1,2 II. Which of the following statement describe a discrete random variable? a. The average increase in height of baby each year b. The number of avocado produced by an avocado tree each year c. The length of span of a 10 months baby d. The average increase in weight of baby each year Which of the following will yield a higher interest? a. Investing in a bank that offers a simple interest rate of 10% annually for 2 years b. Investing in a cooperative that offers an interest rate of 10% compounding annually for IV. 2 years c. Both A and B d. Saving money in a piggy bank for 2 years Which of…
You are doing research on balance and fitness. To complete this research you will need a watch with a second hand. Identify a random sample of n = 12 men and n = 8 women. You must answer this question: How do you establish that this sample is truly random? Have each subject perform the following task: Have the subjects stand with their hands at their side, raise one knee, cross their ankle over the other knee, squat and bring their hands palms together in front of their chest. Time the subject until they put their foot back down on the floor. b) Ask the following questions: i) How many days per week do they exercise? ii) What is their favorite exercise? You will analyze your data and compute the following statistics for each group: 1) The Mean and standard deviation of the number of seconds the subject stayed balanced 2) The Median number of days per week exercised 3) The Mode of the favorite exercise 4) The 90% confidence interval of the mean Construct a complete…
A new store is deciding what pens to stock up on. The owner wants to know if each colour of pen is equally popular so they can start ordering supplies. To find out, the owner selects a random sample of 100 students and asks them "What colour of pen do you prefer: Blue, Black, Red, or Green?" Here is the data collected from the sample of students: Blue = 35 people Black 31 people Red = 21 people Green 13 people = Calculate the appropriate test statistic for these data to determine if there is a preference in pen colour. Enter your calculated statistic below Answer:
Fortune publishes data on sales, profits, assets, stockholders' equity, market value, and earnings per share for the 500 largest U.S. industrial corporations every year. Assume that you want to select a simple random sample of 10 corporations from the Fortune 500 list. Use the last three digits in column 10 of the table of random numbers, beginning with 945. Read down the column and identify the numbers of the 10 corporations that would be selected. (Enter your answers as a comma-separated list.)

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