. When the stock market closes higher than it opened at the beginning of the day, the stock market issaid to have "closed up." The histogram below displays the probability distribution for the number ofdays the stock market "closes up" in a given week. In the long run, what is the average number ofdays per week the stock market "closes up?"(A) 2.0(B) 2.1(C) 2.2(D) 2.5(E) 3.0Probability0.450.40-0.35-0.30-0.40.250.20-0.15-0.10.10-0.20.150.10.050.05-01235Number of Days

The question asks us to find the average number of days in a week that the stock market "closes up."…

Answered: . When the stock market closes higher…

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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We are interested in analyzing data related to college football. Use S to denote the team is in the SEC and use W to denote a team has a winning season. The probability that a team is in the SEC in the data set is 5.5%. The probability that a team has a winning season is 52.5%. The probability that a team is in the SEC and has a winning season is 3.55%. What percentage of teams are in the SEC or had a winning season? b. What percentage of people teams are in the SEC and did NOT have a winning season? Given a team had a winning season, what is the probability that they are in the SEC? а. с.
P(A)=.280 P(B)=.360 P(A and B)=.200 P(C)=.200 Calculate the probability of event A or B
Example 8.3 There are 20, 30 and 50 heavy smokers, moderate smokers and non-smokers, respec- tively. Construct a frequency table and illustrate the three rules of probability.
In an experiment, college students were given either four quarters or a $1 bill and they could either keep the money or spend it on gum. The results are summarized in the table. Complete parts (a) through (c) below. Purchased Gum Kept the Money Students Given Four Quarters Students Given a $1 Bill 26 13 18 35 a. Find the probability of randomly selecting a student who spent the money, given that the student was given four quarters. The probability is. (Round to three decimal places as needed.) b. Find the probability of randomly selecting a student who kept the money, given that the student was given four quarters. The probability is (Round to three decimal places as needed.) c. What do the preceding results suggest?
The "Dogs of the Dow" are the stocks listed on the Dow with the highest dividend yield. The following table shows the top ten stocks of the "Dogs of the Dow" list for 2015, based on their performance the preceding year. If you selected two of these stocks at random, what is the probability that both the stocks in your selection had yields of 3.75% or more?
A deck of four (4) cards has exactly one (1) color printed on each face – blue, yellow, red, or green. You have two (2) identical decks of this type. In this game, you randomly select a card from each of the two decks. Your score is the number of blue cards drawn – refer to this quantity as X. The probability distribution is below: X P(X) 0 0.5625 1 0.375 2 0.0625 What is the average number of blue cards drawn? What is the probability that at most one blue card is drawn?
A gambler uses theory to calculate the probability of winning a card game and gets P(winning) = 0.10. Which option best describes the meaning of this probability? A. He will win 10 times B. In the long run he will win approximately 10% of the time C. He will win on every 10th play D. He is guaranteed to win exactly 10% of the time
Q11 At a soccer (aka football) game, the probability of a goal keeper saving from a penalty kick is 0.3. After facing five different penalty kicks, assuming each penalty kick is independent, what is the probability that the goal keeper saves exactly three of the penalty kicks?
In Alpha College, students are required to join at least one school club to get extra-curriculum activities’ marks.Suppose the following table represents the probability distribution function of the number of clubs (?) astudent join: ? 1 2 3 4 ?(? = ?) 0.1 2? ? + 0.1 ? (a) Find the value of ?.(b) What is the probability that a student joins at most two clubs?(c) Find ?(?), ???(?) and ?(?).(d) Suppose the membership fee is $100 per club, with the first enrolled club is free of charge. Let ? bethe total membership fee a student pay. Compute ?(?) and ?(?).(e) What percentage of students are paying not less than $200 for the total membership fee?(f) Write a simple paragraph (about 30 -50 words) to summarize the total membership fee a student payingfor joining school club(s) (based on the results in parts (d) and (e)).
At the close of the stock markets on a day in 2013, there were 5905 companies listed with a certain stock exchange. On this day, the probabilities of advancing, declining, and unchanged company stocks appears in the table for the two exchanges. Find the probability an unchanged stock was listed on Exchange 1. Exchange Exchange 1 Exchange 2 Percentage of Probability of Probability of Stock Stock Companies Listed Advancing Declining 0.045 0.267 0.047 0.297 54.4% 45.6% The probability that an unchanged stock was listed on Exchange 1 is (Round to three decimal places as needed.) Probability the Stocks Remain Unchanged 0.045 0.047
A deck of four (4) cards has exactly one (1) color printed on each face – blue, yellow, red, or green. You have two (2) identical decks of this type. In this game, you randomly select a card from each of the two decks. Your score is the number of blue cards drawn – refer to this quantity as X. The probability distribution is below: X P(X) 0 0.5625 1 0.375 2 0.0625 1. If we replaced the yellow card in the first deck with another blue card, what would be the probability of drawing two blue cards? 2. If we replaced the yellow card in the first deck with another blue card, what distribution would the variable X follow?

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