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Question: We need to survey a random sample of the 300 passengers on a flight from San Francisco to Tokyo. Name each sampling method described below.
a) Pick every 10th passenger as people board the plane.
b) From the boarding list, randomly choose 5 people flying first class and 25 of the other passengers.
c) Randomly generate 30 seat numbers and survey the passengers who sit there.
d) Randomly select a seat position (right window, right center, right aisle, etc.) and survey all the passengers sitting in those seats.
At a state political rally, a spaker announced "we should raise test scores so that the students are above the state median". How would you analyze this statement?
in a large american university in 1969 the male and female professors were sample independently yielding the following
The probability I'll jog today is 0.90 and the probability you'll jog tonight is 0.30. Find the probability:
Conduct a statistical analysis (at α = .01) to determine if the true mean performance level for students in the rudeness condition is lower than the true mean performance level for students in the control group.
What is the probability that it falls with heads upward? Make at least 50 trials to estimate the probability of a head.
Programmers have monthly incomes of less than $2,834, what is the value of the standard deviation of the monthly earnings of the computer programmers?
What are secondary data? Differentiate between internal and external secondary data.- Besides accounting and financial information, what are some of the other sources of internal secondary data?
At the .05 level, you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. Is this a test of sample means or sample proporti..
The 100 mA meter range has an error of 0.034% of reading and 0.005% of range. If the meter reading is 86.95 mA, what is the instrument error in mA? Ignore reading error.
find the sampling distribution and pdfs of ysub1 and ysubn for random samples of size n from a continous uniform
Determine the least squares line and forecast Y for an average weekly temperature of 63 - Is this a realistic value for the population mean of the client's account? Explain.
Perform the sensitivity analysis for the COM-TECH case. Assume you are interested in following two probabilities: probability of receiving grant, and probability of high cellular R&D costs.
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