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of 500 vehicles sold by an auto dealership last month 200 have a defect that will require a factory recall for dealer
based on past experience 20 of the contacts made by a firms sales representatives result in a sale being made charlie
the manufacturer of a quartz travel alarm clock claims that on the average its clocks deviate from perfect time by 30
employees at a corporate headquarters own an average of 240 shares of the companys common stock with a standard
for a given sample size the standard error of the sample mean is 10 grams with other factors unchanged to what extent
when a production machine is properly calibrated it requires an average of 25 seconds per unit produced with a standard
based on past experience a telemarketing firm has found that calls to prospective customers take an average of 20
in 1999 the average fee paid by hampr block tax preparation customers in canada was 5593 assume that the standard
given the following probability distribution for an infinite population with the discrete random variable
for the situation described in given exercise suppose that only 49 of the registered voters in the sample favor the
the campaign manager for a political candidate claims that 55 of registered voters favor the candidate over her
repeat given exercise but with observations in each sampleexercise using the procedures in computer solutions 81 as a
using the procedures in computer solutions 81 as a general guide simulate 150 simple random samples of size n 4 from a
using the procedures in computer solutions 81 as a general guide simulate 150 simple random samples of size n 2 from
a firms receiving department has just taken in a shipment of 300 generators 20 of which are defectivethe quality
of the 235 airports available for public use in michigan 128 are paved and lighted for a simple random sample of n 50
suppose a study on the relationship between gender and political party included 200 men and 200 women and found 180
for each pair of variables indicate whether or not a two-way table would be appropriate for summarizing the
each fall auditions for the band and orchestra are held at a large university last fall the numbers of males and
the following two-way table of counts summarizes whether respondents smoked or not and whether they had ever divorced
the following table shows data for grades usually achieved in school and how often the respondent puts on sunscreen
is smoking more dangerous for womenhigher heart risk in women smokers was the headline of an april 3 1998 article at
a random sample includes 110 women and 90 men of the women approximately 9 are left-handed while approximately 11 of
suppose a newspaper article claims that drinking coffee doubles your risk of developing a certain disease assume that