• The normal eco-friendliness of U.S. light (vehicles, SUVs, minivans, vans, and light trucks) for 2005 was 21 miles for every gallon (mpg). In the event that the standard deviation of the populace was 2.8 and the gas appraisals were ordinarily circulated, (a) what is the likelihood that the fuel utilized for an irregular example of 25 light vehicles is under 18? (b) somewhere in the range of 20 and 24?
• Architects asserts that a specific recipe can build the strength, X, of cement with mean 5000 kg/cm2 and standard deviation 120 kg/cm2 . To test the speculation = 5000 kg/cm2 against the other option
• a) dismissed while the mean strength is really 5000 kg/cm2
• b) acknowledged while the mean strength is really 4960 kg/cm2
• A specific infection taints 17% of individuals. A test used to distinguish the infection in an individual is positive 96% of the time if the individual has the infection and 4% of the time if the individual doesn't have the infection.
• a. For an example of 20,000 individuals complete the table beneath. The main passage has been finished for you Totals Test Result Positive Negative Has Virus . 96 x 3400 = 3264 Does Not Have Virus Totals 20,000
• b. Discover the likelihood that an individual has the infection given that they have tried positive.
• c. Discover the likelihood that an individual doesn't have the infection given that they test negative.
• d. On the off chance that two individuals are picked indiscriminately, discover the likelihood that in any event one of them has the infection.
• Three individuals are running for leader of the understudy chamber. The surveys show James has chances for succeeding at 2:3, Rebecca has chances in favor at 7:13, and Henry has chances in favor at 1:3. Assume that Henry pulls out and offers his help to Rebecca. Further, assume that his allies additionally change to Rebecca. What is the likelihood of Rebecca winning at this point?
• In the event that each book in a Library has an ISBN number that start with 2 particular Letters followed by 5 unmistakable non-zero digits. What will be possibility of choosing a book whose ISBN number has first leller a Consonant and last digit an odd number.
  

(11) Using the standard normal distribution, P ( 0