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Suppose X has a geometric distribution with success probability 1/4; that is, P(X=k) = (3/4)^k-1(1/4). Find all the medians of X.
consumer reports is doing an article comparing refrigerators in their next issue. some of the characteristics to be
The response variable is the change in cholesterol level after two months of treatment. An analysis of variance will be used to compare the three treatments. What null hypothesis is tested by this ANOVA F-test?
According to an early CDC study of 21 patients infected with the swine flu, the average incubation period was 7 days with a sample standard deviation of 4.5 days.
consider a random sample of size n from a bernoulli distribution xi bin1p. for a uniform prior density p unif01 and
The sample standard deviation is $2,050. Using this information, calculate the 95% confidence interval (rounded to the nearest $10). Interpret your findings.
On the other hand, if the market is unfavorable. ken will suffer a loss of $200.000. But ken has always been a very optimistic decision maker.
It does not matter, when data are skewed mean and median are the same.
Fast Service Truck Lines uses the Ford Super Duty F-750 exclusively. Management made a study of the maintenance costs and determined the number of miles traveled during the year followed the normal distribution. The mean of the distribution was 60..
question 1 if 100 random samples of size n were drawn and if for each a 99 confidence interval fornbspmu was computed
a normal distruibution of 640 observations has a mean of 1800 cm and a standard deviation of 90 cm.a draw a
Using the 0.10 level of significance, is there evidence that the mean shopping time at the local supermarket is greater than the claimed value of 22 minutes?
Management at the Kansas City Corporate office for tax prepration wants to accomplish a business objective by conduting a study of the waiting time in its tax offices in different states.
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