20. On an 8-question true or false test, you randomly guess at theanswers. What is the probability that you get all 8 answers correct? Whatis the probability that you get all 8 answers wrong?O A. 1/256; 255/256OB. 1/256; 1/256O C. 1/2; 1/2OD. 1/8; 7/821. If A and B are two events associated with the same sample space of arandom experiment then P(A/B) is given byO A. P(AMB)/P(B), provided P(B) = 0OB. P(ANB)/P(B), provided P(B) = 0OC. P(AMB)/P(B)OD. P(ANB)/P(A)O22. Given that A and B are events such that P(A) = 0.6, P(B) = 0.3 and P(AB) = 0.2, then P(A/B) =?O A. 2/3OB. 1/3O C. 3/4OD. 1/4*

Answered: Image /qna-images/answer/17892b7f-f44e-4594-b40a-65423c351c75.jpg

Answered: 20. On an 8-question true or false…

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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The class I'm taking is statistics! I am completely stuck. Need help. I have attached the problem. Please view attachment before answering. Thank you!
6. A survey by Altgeld Travel Magazine found that 85% of airline passengers prefer to sleep during their flights. Ifwe randomly select 9 passengers, what is the probability that…. (a) Exactly 8 passengers prefer to sleep during their flights? (b) 8 or more passengers prefer to sleep during their flights?
4 children. He makes a fast, wrong estimate of the probability of various mixes of boys and girls among QUESTION 3. Mr. Fastwrong is working for the census department and he is counting families that have the families. His assistant, Ms. Slowright, analyzes the issue and corrects his work. Fill her corrections of his wrong guesses into the table below. Number of boys among the 4 children 1 0 4 3 2 Number of girls among the 4 children 0 1 2 4 Use fractions (not percents) in your answers. Mr. Fastwrong's estimate of the fraction of families having this distribution of boys and girls 1/5 1/5 1/5 1/5 1/5 Ms. Slowright's estimate of the fraction of families having this distribution of boys and girls
Question 1Suppose we have an experiment that consists of flipping a coin 5 times.i. Find the total number for the outcomes for this experiment? ii. List all the elements in the sample space?iii. Find the probability that tails will be occurring at least 2 times on three coin flips?iv. Find the probability of getting all Head and all Tail on five coin flips?Question 2A bag has 10 blue balls and 5 red balls. 2 balls are to be drawn successively and without replacement. What is the probability that the first ball is red and the second is blue?Question 3Two coins are loaded so that each comes up heads 80% of the time when tossed. If the coins are both tossed simultaneously, i. What probability will the result be both are Tail?ii. What probability will the result give Head and Tail?
A couple plans to have four children. The father notes that the sample space for the number of girls the couple can have is 0, 1, 2, 3, and 4. He goes on to say that since there are five outcomes in the sample space, and since each child is eaually iikely to be a boy or girl, all five outcomes must be equally ieiy. Therefore, the probability of all four children being girls is 1/5. Explain the flaw in his reasoning. The argument is only correct if each child is equally likely to be a boy or girl. O The outcomes are not equally likely. O The sample space has less than 5 possible outcomes. O The sample space has more than 5 possible outcomes.
2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:
Consider the sample space for making random guesses on a 3 question true/false exam. {TTT TTF TFT FTT FFT FTF TFF FFF} What is the probability that the list of random guesses will contain 2 "T" guesses and a single "F" guess?
None
Suppose D and C are independent events in the same sample space. If we know that Pr [D] = ½ and Pr[C] = ½, Pr[DUC] determine Pr DUC A. 8 35 26 B. 35 9 C. 35 6 D. E. 27 35
Match the sample space for compound events based on a psychology study. The first card shown is a person or an object. The second 1. card shown is red, green, or blue. sample space of size 10 The first card shown is a person or an object. The second 2. sample space of size 4 card shown is red, green, black, or blue. The first card shown is red or green. The second card shown 3. is a person or an object. sample space of size 8 The first card shown is red, green, black, blue, or yellow. The 4. second card shown is a person or an object. sample space of size 6
Let E and F be mutually exclusive events in a sample space S. The odds that E occurs are 3:5 and the odds F occurs are 2:8. If it is known that either E or F occurred, what are the odds that the event was E? The odds that E occurred areDO (Type whole numbers. Simpity your answer.)
The probability of 6 P events when N = 10 and P = .7 is the same as 4 Q events if Q=.3 and N=10. a. False O b. True O c. Cannot say

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