a)
we have to calculate probablity between 20 and 38
probablity between 20 and 38 is 0.8278
b)
we have to calculate
Problem 2: Problem 2: (20 points) Exam #3A ong all the computer chips produced by a...
(2) yn Corporation manufactures computers chips. The machine that is used to make this chips is known to p than 4% defective chips, it needs an adjustment. The quality control inspector often selects sam of chips and inspects them for being good or defective. One such random sample of 200 chips taken recent ly from the production line contained 14 defective chips at the α-5% level of signif- cance,test whether or not the data give sufficient evidence to warrant an...
2. At a computer manufacturing company, the actual size of computer chips is uormally^ distributed with a mean of 10 centimeter and a standard deviation of 2.1 centimeter. A random sample of 24 computer chips is taken. What is the probability that the sample mean will be between 10.95 and 11.05 centimeters? The personnel director of a large corporation wants to study absenteeism among clerical workers at the corporation's central office during the year. A random sample of 25 clerical...
Have to show work for every problem 4. A company uses three plants to produce a new computer chip. Plant A produces 30% of the chips. Plant B produces 45% of the chips. The rest of the chips are produced by plant C. Each plant has its own defectiv rate. These are: plant A produces 3% defective chips, plant B produces 1% defective chips, plant C produces 5% defective chips. Hint: draw a tree diagram. (a) Construct a tree diagram...