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1. The data consists of random sample of 30 households from the 2007 American Community Survey. Construct a frequency distribution and a histogram for each data set.
Monthly mortgage payment (In dollars):
430 330 740 860 940 280
2400 1000 1800 300 2400 300
2000 350 3200 2100 710 1100
1300 1100 500 500 2000 800
1000 160 1400 900 700 740
2. For the 22 states that produce large numbers of broiler chicken, the following stem-and-leaf plot gives the production in millions of live pounds.
Stem Leaves
0 0012234
0 8
1 02333
1 66
2 2
3 2
3 4
4 78
5
6 4
6 7
Units: 6/7 = 67 million pounds
a. Describe the shape of the distribution.
b. How many states produce fewer than 10 million pounds?
The correct set of hypotheses to test the effect of the bonus plan, the difference between the t and z distributions
The following study was developed by Economist Simon Fass. Fass surveyed a sample population of low-income households in St. Martin. The variables analyzed were monthly income per adult and choice of rental contract for housing.
Determine the probability that each of the 30 students will get computer in working condition?
Two letters are chosen at random without replacement from word statistical. Determine the probability that both letters are s?
Mean and standard deviation are 584.6 and 34.28
Which of the following Venn diagrams has shaded the event that the contractor wins exactly one of the contracts and evaluate the mean time to complete the entire homework assignment
Assuming that the Poisson distribution is a plausible model in describing variability of asbestos fiber counts in filters; derive a 95% confidence interval indicating the variability in the average number in asbestos fibers.
Compute mean absolute percentage error (MAPE) of the forecasts.
Organize data into a frequency distribution. How many classes would you propose? What value would you propose for class interval?
Which of the following statements is consistent with the scatterplot
Basic Statistics problem
Determine the probability that no more than 10 firms are perfectly competitive?
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