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a man makes the implausible claim that the average yearly salary of men in a certain profession is only s6600 a random
a coffee shop sells on the average 320 cups of coffee per day with a standard deviation of 40 after advertising they
in order to compare the yearly incomes in two professions a survey was made among 100 men in each in one sample the
records show that in a random sample of 100 hours a machine produced an hourly average of 678 articles with a standard
1 a derive the mle of a2nbspfor the normal distribution assumingnbspmu is knownb is it unbiased2 as n 1 delegates
1 why is it so hard to distinguish among the effects of culture race and ethnicity in our research2 why should we
1 what are some difficulties that scientists have had in categorizing people by race and in defining race2 why is
a random sample of 100 workers in one large plant took an average of 12 minutes to complete a task with a standard
two samples of 100 seedlings were grown with two different fertilizers one sample had an average height of 10 inches
a random sample of 60 students was taken in two different universities the first sample had an average mark of 77 and a
1 100 cars on a thruway were clocked at an average speed of 69 mph with a standard deviation of 4 mph construct a 95
in a random sample of 10 football players the average age was 27 and the sum of squared deviations was 300 in a random
in a random sample of tires produced by a certain company 20 did not meet the companys standards construct a 95
1 by talking to 15 voters you discover that only 3 favor a certain candidate construct a 95 confidence interval for the
in a survey of us consumer intentions 498 families in a random sample of 2500 indicated that they intended to buy a new
a farmer has 9 wheat fields planted the distribution of yield from each field has a mean of 1000 bushels and variance
1 suppose gallup takes a poll of 1000 voters from a population which is 56 percent democratic letting p be the sample
1 what is the chance that of the first 100 babies born in the new year more than 60 will be boys2 what is the chance
1 what are the advantages of longitudinal designs and cross-sectional designs2 how does a panel study differ from a
an anthropologist measured the heights in inches of a random sample of 100 men from a certain population and found the
a research study examines the consumption expenditures in thousands of dollars of a random sample of 50 american
1 the reaction times of 150 randomly selected drivers were foun4 to have a mean of 83 sec and standard deviation of 20
1 what is the probability that a statistician who constructs 20 independent 95 confidence intervals will erra once as
1 why do open-ended questions provide more information to survey researchers than closed-ended questions what drawbacks
compare the strengths of the linear relationships indicated by the given population correlation coefficients by putting