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Assume every bus in Gainesville follows an exponential distribution with a mean of 7.5 minutes. From a bus stop, we randomly survey 100 different buses (i.e., not of the same line).
Calculate the probability that a specific bus (say, line 34) passes from the bus stop in the next 10 minutes. Then, calculate the probability that the mean of all the buses is less than 10 minutes. Explain the result, does it make sense?
for a standard normal probability distribution find the percentage of data that area within 1 standard deviation of the
Specify the null and alternative hypotheses you would use to determine if the opinions of Internet users are evenly divided among the four categories.
The standard deviation of the differences d for the paired sample data s d = ____________
The U.S. National Center for Health Statistics. Suppose that we randomly select fifteen 20-year-olds. How many do you expect to still be alive at age 65?
For monthly volume of 300 tables, find out total cost, total revenue and profit.
question an opportunity sample of 50 undergraduate students was asked to complete a series of personality
the following data were collected in a study relating hypertensive status measured at the baseline to incident stroke
Use the fact that the confidence interval for the mean is in the for x- E to x+ E to compute the sample mean and the mazimal margin of error E.
describe the sample space for the given random phenomenon you are an egg-packing engineer. in a test of new package
a publisher has discovered that the number of words contained in a new manuscript is normally distributed with ? 20000
The sums of squares were computed as SSW = 4773.3 and SSA = 591.2. Use the F test of ANOVA (assume α = 0.05) to decide whether or not there are any differences in true average lumen outputs between the three brands for this type of light bulb.
The population of incomes in a particular community is thought to be highly right-skewed with a mean equal to $36,789 and a standard deviation equal to $2,490.
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