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Preceding exercises dealt with ownership of cattle and the collection of firewood by households in a particular Nepal village. Statistics students are asked if the same probability distributions should apply to other Nepal villages; who gives the best answer? Adam: As long as they're all in the same country, the villages should be about the same, so the probability distributions should be the same, too. Brittany: I don't know anything about Nepal, but I can picture that some villages could be a lot different from others, depending on how much they need cattle to farm and what kind of traditions they have for who collects firewood. The probability distributions don't necessarily apply to other Nepal villages. Carlos: They didn't say if the village was sampled at random. If it was sampled at random, then it should be the same as other villages in terms of firewood collection and cattle, right? Dominique: If it's sampled at random, then the probability distributions for other villages should be close, but they wouldn't be exactly the same.
a) What is the probability that the sample average of the 16 textbooks is less than 3.5 pounds? (use 2 decimal places in your answer)) b) Imagine the distribution of all possible samples averages of textbook weights (with ). What is the weight th..
Standard deviation 0.3 ton. What is the probability that a fully loaded truck of this model is (a) less than 6 tons, (b) more than 7 tons, (c) between 6 and 7 tons?
Job Interviews: Based on information from MRINetwork, some job applicants are required to have several interviews before a decision is made. The number of required interviews and the corresponding probabilities are: 1 (0.09); 2 (0-31); (0.37); 4 (..
If a country wants to set the mileage limit at a point such that 80% of the tourists in the program will want to drive fewer kilometers.
a machine is set to pump water into a pool at the rate of 10 gallons per minute. upon inspection it is learned that
you have a choice of borrowing money from a finance company at 24 compounded monthly or borrowing money from a bank at
As we noted a few chapters ago, the Pew Research Center (www.pewresearch.org) reports that they are actually able to contact only 76% of the randomly selected.
The storage time (in months) until a collection of long-life Li/SO4 batteries become unusable was modeled in Morris (1987)9 as a Weibull distributed random variable with ζ = 2 and β = 10. Let us refer to this variable as the battery's "maximum sto..
identify a quantitative variable measurement in your businessorganization that has either interval or ratio level of
An experiment was conducted to compare the reaction times of a group of 10 volunteers (from a psychology class) to a bright light versus the sound of a loud air horn. Find a 95% confidence interval for µD = µX - µY .
a for a representative sample of cars would the correlation between the age of the car and its gasoline economy miles
Design an experiment using a staged manipulation to test the hypothesis that when people are in a good mood, they are more likely to contribute to a charitable cause. Include a manipulation check in your design.
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