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Can you compare two populations by looking at box plots or stem-and-leaf displays of random samples from the two populations? Explain.
Find the new optimal reserve prices for each of the distributions above. If the numbers are different from those calculated in (a), (b) and (c) above, explain why this does not contradict the fact that the optimal reserve price is independent of t..
Assume the distribution of ages of homes follow an approximately normal distribution. Show all the seven steps and include the p-value.
Doctors nationally believe that 68% of a certain type of operation are successful. In a particular hospital 47 of these operations were observed and 37 of them were successful. At a = 0.05 is this hospital's success rate different from the nationa..
the pulse rates for 13 adult women were as follows. construct a 0.98 confidence interval for the mean pulse rate. give
Determine the relationship between pretest scores and final exam scores after controlling for cumulative GPA. Compute SPSS test would you run?
a manufacturer of light bulbs advertises that on average its long-life bulb will last more than 5000 hours. to test the
the monthly earnings of a group of business students are normally distributed with a standard deviation of 594. a
Let and be random variables with means μX and μY, variences σ2X and σ2Y, and correlation coefficient ρX ,Y- Find the value of the constant.
a new method of treatment is hypothesized to reduce the days patients are hospitalized after surgery. for a sample of
What conclusions can you draw about the nature of the relationship between anxiety and exam performance?
what are the basic assumptions underlying multiple means test and why do they
A restaurant claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1 minute.
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