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a simple random sample is to be drawn from a population of 800 in order to have 95 confidence that the sampling error
a simple random sample is to be drawn from a population of 2000 the population standard deviation has been estimated as
there are 100 members in the united states senate a political scientist wants to estimate with 95 confidence and within
a transportation company operates 200 trucks and would like to use a hidden speed monitor device to record the maximum
a research firm supports a consumer panel of 2000 households that keep written diaries of their weekly grocery
a university official wants to estimate with 99 confidence and within 2 the average amount that members of fraternities
a quality-management supervisor believes that no more than 5 of the items in a recent shipment of 2000 are defectiveif
in a destructive test of product quality a briefcase manufacturer places each of a simple random sample of the days
a torque wrench used in the final assembly of cylinder heads has a process standard deviation of 50 lb-ft the engineers
there are approximately 109 million television households in the united statesa ratings service would like to know
in given exercise a small-scale preliminary survey has indicated that no more than 20 of the television households will
in a survey of 500 us adults 45 of them said that lounging at the beach was their dream vacationassuming this to be a
for a new process with which the production personnel have little experience neither the standard deviation nor the
there were 904 new subway restaurants franchises opened during 2002 suppose that subway wished to survey a simple
in given exercise suppose subway has carried out the study using the sample size determined in that exercise and 275 of
a research firm wants to be 90 confident that a population percentage has been estimated to within 3 percentage points
the activities director of a large university has surveyed a simple random sample of 100 students for the purpose of
based on its 1999 survey student monitor reports that 20 of us college students used the internet for job hunting
according to keynote systems wal-marts website was available 95 of the time during a holiday shopping seasonassuming
a pathfinder research group survey estimates that of us adults who have a favorite among the three stooges moe is the
estelle mccarthy a candidate for state office in new jersey has been advised that she must get at least 65 of the union
an investment counselor has purchased a large mailing list consisting of 50000 potential investors before creating a
1 if we want to cut the maximum likely error in half well have to double the sample size is this statement correct why
from past experience a package-filling machine has been found to have a process standard deviation of 065 ounces of
based on a pilot study the population standard deviation of scores for us high school graduates taking a new version of