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Find mean, median, mode, standard deviation, and variance for each distribution.
a super market analysed its most recent sales and determined the relationship between the way a customer paid for the
Assuming the population standard deviation of the amount spent per owner is $12, construct and interpret a 95% confidence interval for the mean amount spent per owner for an obedience class.
Please use words to describe the solution, not just symbols. (basically, explain what is going on in addition to an answer) Use a math symbol editor where appropriate.
1 the blood groups of 200 people is distributed as follows 50 have type a blood 65 have b blood type 70 have o blood
He would like to estimate with .05 of the true proportion with a confidence level of 90%. What is the sample size needed?
1 two researchers are interested in examining the relationship between level of education and level of volunteerism
A party, and 35% stay home. Seventeen people are randomly selected. Can the probability that exactly 4 of them stay home be computed using a binomial model?
Select a strati?ed random sample that uses full-time and part-time students as the two strata and that includes 10 students from each stratum. Describe the procedure you used to select the sample, and identify the students included in your sample..
Compute mean x and standard deviation s of data above. Calculate Ho by using traditional/classical method.
consider the following joint discrete probability mass function pmfpxy 0.1 for xy 11 21 12 and 220.2
The time until a component is taken out of service is uniformly distributed on 0 to 8 hours. Two such independent components are put in series, and the whole system goes down when one of the components goes down.
does the use of cell phones lead to a higher incidence of brain cancer? people with brain cancer were matched with
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