Simplified stock market. Suppose there are three kinds of days: GOOD, GREAT, and ROTTEN. The following table gives the frequency of each of these types of days and the effect on the price of a certain stock on that day. Type of day Frequency Change in stock value GOOD 60% 10% +2 +5 GREAT -4 ROTTEN 30% The type of a given day is independent of the type of any other day. Let X be the random variable giving the change in value of the stock after 1 day. Please answer: a. What is the expected change in the stock price? (That is, find E(X).) b. Calculate Var(X). NOTE: Give your answer to two decimal places (i.e., round to the nearest hundredths)

Q: 2.  Is Male and high use of technology independent? 3. Is Female and low use of technology mutually…

A: Here define event as shown in table Here use given contingency table for answer this question

Q: An insurance company covers 100$ per day for up to three days staying in a hospital, and 50$ per day…

A: Given information: Let K be the number of days the patient used to stay in the hospital. The…

Q: East South Midwest West 75 128 29 52 Hospitalization Physician's visit Outpatient treatment 233 514…

A: Since you marked only 2.31,I am solving that only. Let us first rename the events,which will be…

Q: The academic board of Governors of a University to a sample of 60 lecturers. The sample was divided…

A: The sample data is given as :        Gender     Use of Technology Male Female…

Q: 13. What is the sum of the probabilities of all values of the random variable? C. ΣΡ(Χ)-1 D. ΣΡ(Χ)…

A:

Q: Choose an American household at random and let the random variable Y be the number of persons living…

A: Given, Let the random variable Y be the number of persons living in the household. Number of…

Q: Wattage Good Defective Total A quality control inspector is checking a sample of lightbulbs for…

A: Given that  Total defective bulbs (D) =22 Total defective bulbs that are 50 watts (D∩50W) = 6 Total…

Q: If a random variable X has the X² distribution with degree of freedom 17. Then P(6.408 < X < 12.002)…

A:

Q: Consider two games at a village fair, A and B. Let the gain in dollars in one play of Game A be…

A:

Q: A bag of candies contains 12 coffee candies, 10 chocolate candies, and 8 caramel candies. Ella…

A:

Q: A random variable X has the following probability function - 3 Р (х) - 2 1 1 2 %3D 3 k k •2 2k •4 2…

A: Answer: For the given data

Q: A local high school has both male and female students. Each student either plays a sport or doesn't.…

A:

Q: A company publishes statistics concerning car quality. The initial quality score measures the number…

A:

Q: Medical Specialities The following doctors were observed on staff at a local hospital. MD Doctor of…

A: From the provided information,   MD Doctor of Osteopathy Total Pathology 3 1 4…

Q: Exit Poll Statistics problem:

A: Let the events, A: The respondent voted in favor of Scott Walker, K: The respondent has a college…

Q: Use the data in the following​ table, which lists​ drive-thru order accuracy at popular fast food…

A: a. The row and column totals are,   A B C D Total Order Accurate 335 279 241 125 980 Order…

Q: Girls and Boys. One probability model for child gender is that a boy or a girl is equally likely to…

A:

Q: A coworker offers you the following deal. For a $10 fee, you may pick an envelope from a box…

A: Given Information: For a $10 fee, you may pick an envelope from a box containing 100 seemingly…

Q: A casino game works as follows: You have to pay $6 to play. Then you flip a fair coin and roll a…

A: There is total 12 possible outcomes i.e {(H,1), (H,2), .... (H,6), (T,1), (T,2)........(T,6)} Let X…

Q: The academic board of Governors of a University to a sample of 60 lecturers. The sample was divided…

A: Given Information:   Male Female Total High 10 16 26 Average 6 4 10 Low 11 13 24 Total 27…

Q: Which of the following is an example of a continuous random variable?Single choice. (1 Point) Number…

A: Continuous random variable  If data can take infinite number of value then the variable continuous…

Q: Determine the value/s of the random variable in each of the following situations: A game spinner…

A: Ans#- Given a game spinner with colors red, yellow, blue, and green is spun twice.           Let Y…

Q: The academic board of Governors of a University to a sample of 60 lecturers. The sample was divided…

A:

Q: Q10. The probability model for a random variable A is [% , a=-1 P₁(a)=% a=1 0, otherwise The…

A:

Q: 24. What is the missing probability when the random variable is 200? 100 200 300 400 500 600 P(X)…

A: Probability distribution table is given. X 100 200 300 400 500 600 P(X) 0.1 x 0.5 0.15 0.05…

Q: Which of the following is a discrete random variable?*   Average amount of electricity consumed.…

A:

Q: A boy spins a coin until he obtains a head. The following diagram shows the probability distribution…

A:

Q: 2. Palatsamba repairs pumps for farmers. The number of days it takes to fix the pumps and the…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Giving a test to a group of students, the grades and gender are summarized below A B C Total Male…

A: Given Information:   A B C Total Male 6 13 9 28 Female 10 15 3 28 Total 16 28 12 56 If…

Q: Union shop steward B. Lou Khollar has drafted a set of wage and benefit demands to be presented to…

A: It is given that the 30 machinist and 30 inspector from different opinion packages.

Q: A random variable X can take on the value 0, 1, 2, or 3. Which of the following is a possible…

A: Given Data: X can take values 0, 1, 2 or 3     X 0 1 2 3

Q: Sources of Energy Use A breakdown of the sources of energy used in a country is shown below.…

A: Given: Percentage of Hydropower=3Percentage of oil=42percentage of natural gas=20Percentage of…

Q: A watch manufacturing factory puts its watches through two quality control stages. The probability a…

A: Let X be the number of watches passing both stages.  Let p = probability that watch passes through…

Q: For a binomial random variable the probability of success per trial is  π = 0.35   27 What is…

A: Givenprobability of success per trail (π)=0.35sample size(n)=30

Q: An insurance company covers 100$ per day for the first day of staying in a hospital, and 50$ per day…

A:

Q: You own a local company that has special equipment for moving pianos. Your company has enough…

A:

Q: Activity 2: Solve the following problem. The following are the number of cars sold per day at ABC…

A: Given :The number of cars sold per day at ABC Motor corporation.During the past 500 working days

Q: A grab bag contains 8 football cards and 2 basketball cards. An experiment consists of taking one…

A:

Q: B. Answer the following: 1. MEAN OF DISCRETE RANDOM VARIABLE Find the Expected value or Mean of the…

A: The following data is given, Probability distribution of winning prize and respected probability, a)…

Q: A local high school has both male and female students. Each student either plays a sport or doesn't.…

A: There are two independent variables are male and female. There are two dependent variables which are…

Q: A company publishes statistics concerning car quality. The initial quality score measures the number…

A: Here,  lambda = 0.85 for car A. lambda = 1.28 for car B. Let random variable X be equal to the…

Q: 15. The number of absences from June to March of a student based on his clas adviser's record is…

A: Given : The no. of absence from the June to March of a student based on his class adviser's record…

Q: A lecturer is selected at random, what is the probability that                a) the lecturer was…

A: Given :   Male female  Total High  10 16 26 Average  6 4 10 Low 11 13 24 Total 27 33 60…

Q: A local high school has both male and female students. Each student either plays a sport or doesn't.…

A:

Q: The student forum of a high school needs to elect 4 students out of a total of 9 boys and 16 girls…

A: Given that  The student forum of a high school needs to elect 4 students . Total boys = 9 Total…

Q: The academic board of Governors of a University to a sample of 60 lecturers. The sample was divided…

A: Given Information:   Male Female Total High 10 16 26 Average 6 4 10 Low 11 13 24 Total 27…

Q: The academic board of Governors of a University to a sample of 60 lecturers. The sample was divided…

A:

Q: 4.75 Servings of fruits and vegetables. The following table gives the distribution of the number of…

A: We have to find mean

Q: Sources of Energy Use A breakdown of the sources of energy used in a country is shown below.…

A: