The probability (i) that A can solve a problemin Statistics is 4/5, (ii) that B can solve it is 2/3, (iii) that C cansolve it is 3/7. if all of them try independently, find the probabilitythat the problem will be solved.

We have given that A can solve a problem in statistics is 4/5 B can solve it is 2/3 C can solve it…

Answered: The probability (i) that A can solve a…

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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Hi, I got stuck in this problem. Firstly, I will provide the problem and a solution of someone else but it can be wrong. If it is wrong please show and explain (in few words what you do in the steps you did to solve it). If the answer I provided is correct, explain 3 things: 1) How did that person deduce the probability of match p = 3/6 or 1/2? 2) What does 'q' mean or have to do with this problem? 3) What do you plug into the calculator to get '0.015625' (Basically, I don't understand how to plug 6c0, 6c1, or 6c2)? THANK YOU
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Based on information from a previous study, r1 = 39 people out of a random sample of n1 = 105 adult Americans who did not attend college believe in extraterrestrials. However, out of a random sample of n2 = 105 adult Americans who did attend college, r2 = 50 claim that they believe in extraterrestrials. Does this indicate that the proportion of people who attended college and who believe in extraterrestrials is higher than the proportion who did not attend college? Use ? = 0.01. What is the value of the sample test statistic? (Test the difference p1 − p2. Do not use rounded values. Round your final answer to two decimal places.)(c) Find (or estimate) the P-value. (Round your answer to four decimal places.)
State the null hypothesis and alternative hypothesis and solve and conclude whether to reject it or not
Somebody tries to show in a 95% confident statistical test that more than a quarter of all adult Border collies can run faster than 50 km/h. a. What is the conclusion of this test if there are 7 dogs that can run faster than 50 km/h in randomly drawn sample of 20 adult Border collies? Use the p-value in your solution b. Suppose that the power of the test is 97% if a randomly drawn sample of size 20 What is then the real proportion of all adult Border collies that can run faster than it km/
"Why does my company hire idiots as quantitative analysts? One of them just told me that the probability of getting exactly 1 gallon of sap in a day from one of our sugar maple trees is 0. I know he's wrong because yesterday tree #4324B produced exactly 1 gallon of sap." Evaluate this statement
The percentage of people in the population suffering from a certain disease is 32%. There is a test to detect the disease that is quite accurate. Of the people who have the disease and who undergo the test, it is indicated that 2% of them do not have the disease. Of the people who do not have the disease and who undergo the test, 2% of them are reported to have the disease. Suppose a person takes the test and indicates that they have the disease. Find the probability that the person does have the disease. Round your answer to two decimal places.
I'm have a difficult time understanding how to solve (c). I keep getting the answer wrong. If I unsterstand correctly the probabilty of not being femaleP(A) =1-total #of female/total # of male and female and the probability of not have a degree outside of fieldP(B) is 1-degrees outside of field/ total degrees to solve I did P(A)+P(B)- probability of being female with degree in field. then I tried to solve for probability of being male with a degree in the field and it was still incorrect.
The manager of the city pool has scheduled extra lifeguards to be on staff for Saturdays. However, he suspects that Fridays may be more popular than the other weekdays as well. If so, he will hire extra lifeguards for Fridays, too. In order to test his theory that the daily number of swimmers varies on weekdays, he records the number of swimmers each day for the first week of summer. Test the manager’s theory at the 0.01 level of significance. Swimmers at the City Pool Monday Tuesday Wednesday Thursday Friday Number 64 46 41 56 70 Copy Data Step 1 of 4 : State the null and alternative hypotheses in terms of the expected proportion for each day. Enter your answer as a fraction or a decimal rounded to six decimal places, if necessary. H0H0: pi=⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯HaHa: There is a difference in the number of swimmers from day to day.
This 3 questions solution
Pre (out of 100) Final (out of 200) Individual 63 130 1 Individual 80 137 2 Individual 56 139 3 Individual 17 116 4 Individual 54 153 Sample Мean 54 135 STD DEV 23.0759615 13.5092561
I wonder how do we get the number 22 as I highlight? Please help me to explain. Thank you!

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The probability (i) that A can solve a prob Statistics is 4/5, (ii) that B can solve it is 2/3, (iii) that C plve it is 3/7. İf all of them try independently, find the probabi at the problem will be solved.