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Based on FAA estimates the average age of fleets of the 10 largest U.S. commercial passenger carriers is 13.4 years with a standard deviation of 1.7 years. Suppose that 40 airplanes were randomaly selected from fleets of these 10 carriers and were inspected for cracks in these airplanes that are considered too large for flying. What is the probability that the avearage age of these 40 airplanes is at least 14 years old? Round 4 decimal places. Remeber round ypur z-value to 2 deciimal places.
in its fuel economy guide for model year 2010 vehicles the environmental protection agency gives data on 1101 vehicles.
Is the estimate from the participants significantly higher than the actual number (µ = 3.1)? Use a one-tailed test with = .05.
answers the following questions using the anova source table below. the table depicts a two-way anova in which gender
A firm predicts it will use 560,000 gallons of water next year. If the seasonal index of water consumption is 135 for the second quarter of the year, what is the forecast for water consumption during that quarter?
a locomotives adhesion is the locomotives pulling force as a multiple of its weight. this is an important performance
Identify at least one example of probability encountered in everyday life which has not previously been mentioned.
Describe a specific application of statistics that either has a direct effect on you or your life.
you are trying to estimate the number of csn students with iphones. a random sample of 130 students reveals that 65 of
suppose xn432. using the standard normal table find the probabilities. 1 p-2.5 less than or equal to x which is less
Tucson will receive more cash flows. The 1-year and 2-year forward rates today are equal to today's spot rate. Thus, it hedges receivables at the same exchange rate as today's spot rate.
read and answer the following questions for this onelets talk a little bit about accuracy. when you fit a
marty rowatti recently assumed the position of director of the ymca of south jersey. he would like some current data on
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