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Of the 235 airports available for public use in Michigan, 128 are paved and lighted. For a simple random sample of n = 50, what is the probability that at least 20 of the airports in the sample will be paved and lighted?
Using a computer or calculator that provides proportions falling below a specified z-score, determine the approximate proportion for each of the following situations.
the amount of paint required to paint a surface with an area of 50 m2 is normally distributed with mean 6 l and
Use Benford's distribution to calculate the probability of each digit and record your results in the table above. Comment on how closely your distribution of first digits follows Benford's distribution. Why are they not exactly the same?
Construct a 99% confidence interval for the difference (control-experimental) in average times for the two groups. Does this interval confirm your conclusions in part a?
What should be Vrinat's posterior distribution of average rat- ing of foie gras de canard, assuming ratings are normally distributed?
for each class interval of the frequency distribution given determine the class midpoint the relative frequency and
consider an experiment to determine the effects of alcohol and marijuana on driving ability with alpha .05. fifteen
Construct a box plot for the data in given problem. What can you say about the data?- Draw a frequency polygon and an ogive for these data.
True mean when using a confidence interval of 95%. The standard deviation is estimated at $25. How many lunch receipts must they sample?
the mass m of a randomly chosen tin of baked beans is such that mn420100. find the 20th percentile the value of the
What is the probability that a particular driver had exactly two speeding violations?
Assuming that a multiplicative model can be used to describe the sales data, generate a forecast for the total dollar sales the company can expect to receive in July of .
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