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Waiting times to receive food after placing an order at the local Subway sandwich shop follow an exponential distribution with a mean of 45 seconds. Find the probability a customer waits between 1.5 minutes and 2 minutes.
For each lettered part, a through c, examine the two given sets of numbers. Without doing any calculations, decide which set has the larger standard deviation and explain why. Then check by finding the standard deviation by hand .
A clinical trial is conducted to evaluate the efficacy of a new drug for prevention of hypertension in patients with pre-hypertension
A candidate must gather at least 8,000 valid signatures on a petition before the deadline in order to run in an election. One candidate turns in 10,000 signatures right before the deadline
Four different assembly processes were under consideration. Sixteen workers were randomly assigned to the four processes, eight per process. The number of correctly assembled units in an eight-hour work shift was recorded:
quality progress february 2005 reports on the results achieved by bank of america in improving customer satisfaction
a psychologist is conducting a study in which 30 students attend workshops by the speaking center for one hour per week
A random sample of 17 wolf litters in Ontario, Canada gave an average of x1= 4.9 wolf pups per litter, with estimated sample standard deviation s1 - 1.0.
with any statistical model we assess the fit. does the model accurately depict the truth? explain how standard
A comparison group consisted of 5,055 children who had received no such treatment (brothers and sisters of the children who had received radiation treatment).
The the steps of hypothesis testing b) sketch the distribution involved, and c) explain your answer to someone who is familiar with the t test for a single sample but not with the t sest for independent means.
A researcher has reason to believe that, for an experiment with 50 points, a 95% prediction interval would be of width 4. If the researcher wishes to run a more precise experiment that will result in a 95% prediction interval of width 2, then the ..
suppose that the proportions of blood phenotypes in a particular population are as followsa 0.42 b 0.10 ab 0.04
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