If a student is selected at random, find the conditional prob ability that (a) this student is female, given that the student is majoring in Computer Science (b) this student is majoring in Computer Science, given that the student is female
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- Management of a company that produces a medical device has carefully selected and screened 220 finished items (packaged, ready to ship). The team agrees that the sample contains 33 defective items, all for various visual defects on the package such as crooked labels, poor seal, errant marks on package, etc. The items are then given to an inspector for classification into “defective” and “non-defective” piles. The inspector ends up rejecting 9 non-defective items, and accepting 11 defective items. The inspector classifies the remaining items in the sample correctly. Find the following (answer as a probability, NOT a percentage. Use 2 decimal places: P(inspector accepts the item and its actually defective) =A researcher studies the effects of guilt on memory. First, subjects perform a very boring task for one hour. Then each subject is instructed to tell the next subject either (a) that the experiment took one hour and they found it very boring, or (b) that the experiment took one hour and was very interesting. After that, each subject is asked to study a list of words and are tested on memory for the list. 30 subjects are randomly assigned to one of the two conditions. In order to see whether the experimental manipulation has any effect on memory, which would be the proper statistical test? A)a related sample t-test-test B)an independent sample t-test C)a z test D)a one sample tEach of 400 people who purchased a Honda Civic was classified according to gender and whether the car purchased had a hybrid engine or not. Hybrid Not Hybrid Male 50 150 Female 125 75 We are going to randomly select 1 person from the 400 above. Find P(hybrid OR male) 50 175 325 400 O 175 200 50 200 O 375 400
- The higher education research institute at ucla collected data from 203967 incoming first time , full time freshman from 270 four year colleges and universities in the US. 71.5% of those students replied , yes, they believe that same sax couples should have the right to legal marital status. Suppose that you randomly pick seven first time, full time freshman from the survey. You are interested in the number that believes that same sex couples should have the right to legal marital status. What is the probability that at least two of the freshman reply yes?In a survey of 1200 people, 80 indicated they were going to buy a new car, 70 said they were going to buy a new TV and 65 said they were going to buy a new stove. Of these, 30 were going to buy both a car and a TV, 35 were going to buy a car and a stove and 20 were going to buy a stove and a TV. Twenty people said they were going to buy all three items. A person is selected at random from this 1200 people . Given that this person was not going to buy a TV, what is the probability that he /she was not going to buy a car ?You're a sociologist studying whether grocery prices are different in the inner cities than they are in the suburbs. To investigate this, you pick a random set of items (a basket of goods), and then send shoppers to buy these items at an inner city (IC) grocery, and also at a suburban (SU) grocery. You pick 27 different baskets of goods, so your secret shoppers buy 27 baskets, once at the inner city store, and once at a suburban store. The data is given in the dataset named "ICvSU_2799.xls", which you can find in data folder under Course Documents. Prices could be higher in the inner city because of discrimination, or they could be higher in the suburbs because of the greater disposable income. Use Excel to test the research hypothesis that inner city prices are different than the suburb's prices. The null hypothesis is that inner city prices are equal to suburban prices. You test at the alpha = 0.01 significance level. What do you conclude? Are prices the same? Who has higher…
- (3) Times, Wall Street Journal, and USA Today: In a survey of 150 business travelers, it was found that of three daily newspaper, New York 71 read New York Times; 43 read Wall Street Journal; 34 read USA Today; 30 read New York Times and Wall Street Journal; 25 read New York Times and USA Today; 15 read Wall Street Journal and USA Today; 10 read all three. A person is selected at random from this 150 travelers. (a). What is the probability that the randomly selected person reads New York Times or USA Today but not Wall Street Journal? (b). Given that this traveler read at least one of these three newspapers, what is the probability that he/she read USA Today? (c). Given that this traveler read exactly one of these three newspapers, what is the probability that he/she read Wall Street Journal?d) Suppose we want to pick two numbers from {1,2, ..,100} randomly. What is the probability that the sum of the two picked numbers is divisible by 5.The executives of an accounting firm plan to survey a random sample of clients to determine how satisfied they are with the service they have received. Of the firm's 5412 regular clients, 500 are surveyed and 435 claim to be very satisfied with the service they have received. The sample is the: 5412 regular clients. 500 clients surveyed. 65 clients that were not satisfied. 435 satisfied clients.
- The management of a company finds that 30% of the administrative assistants hired are unsatisfactory. The personnel director is instructed to devise a test that will improve the situation. One hundred employed administrative assistants are chosen at random and are given the newly constructed test. Out of these, 95% of the satisfactory administrative assistants pass the test and 15% of the unsatisfactory administrative assistants pass. Based on these results, if a person applies for a job, takes the test, and passes it, what is the probability that he or she is a satisfactory administrative assistant? If the applicant fails the test, what is the probability that he or she is a satisfactory administrative assistant? Draw the tree diagram. Choose the correct answer below. OA. 95% Pass Ов. 95% Pass Satisfactory Satisfactory 30% 70% 5% Fail 5% Fail Hire Hire Pass Pass 70% 15% 30% 15% Unsatisfactory Unsatisfactory 85% 85% Fail Fail OC. Pass O D. 70% Pass 15% Satisfactory Satisfactory 30% 15%…What is B0,B1, B2,B3Hello, May I get help on this VERY SOON please? I’m extremely confused and a clear explanation would be helpful! Thank you!
