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64% of the workers at Motor Works are female, while 66% of the workers at City Bank are female. If one of there companies is selected at random (assume a 50-50 chance for each), and then a worker is selected at random, what is the probability that the worker will be female? Express as a percentage
If member of sales force submits the entertainment expense (dinner cost for four) of $190, must this expense be considered unusually high. Calculate and interpret z- score for each of six entertainment expenses.
a manager wishes to determine whether the mean times required to complete a certain task differ for the three levels of
Fizz fizz soda comes in two varieties, regular and diet. If a researcher has 8 boxes of each, how many ways can he select 2 boxes of each for a quality control test? Which answer would be correct?
A quality control engineer wants to check if a particular product meets the specification of 90% of the entire product shipped is in perfect condition. He randomly selects a sample of 10 items of the product from a large lot ready to be shipped.
suppose 60 of american adults believe martha stewart is guilty of obstruction of justice and fraud related to insider
heights of women have a bell-shaped distribution with a mean of 156 cm and a standard deviation of 8cm using the
Over the 48 years from 1950 through 1997, the stock market has gone up in the month of January for 31 times; it has gone up for the whole year for 36 times, and it has gone up both for the year and in January for 29 times.
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. What is the lower and upper limit of the 90% CI?
suppose that an insurance agent offers you a policy that will provide you with a yearly income of 50000 in 30 years.
A human factors psychologist studied three computer keyboard designs.
two perecent of calculators produced by texas intruments are defective. a batch of 300 calculators is tested to see if
What is the probability that the sample proportion will be within +/- .03 of the population proportion if a sample of size 1,200 is selected?
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