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A Zoo has offers to look over cost of a new lion den. The actual cost, Y at $200,000 is predicted by the PDF:
f(x) = x for 0 <=x<=1; 2-x for 1<x<2; 0 otherwise
What is the cost? and what is the cost (Y) to develop the den which the probability of exceeding Y is 0.01
the productivity of a factory has been recorded over 10 months together with forecasts made the previous month by the
a population has a mean of 200 and a standard deviation of 50. a simple random sample of size 100 will be taken and the
With a single-sample t ratio, the null hypothesis states that:
a real number x is drawn at random from the interval 01. a rectangle is formed with sides x and 1-x. denote the area by
How would you interpret the findings of a correlation study that reported a linear correlation coefficient of -1.34? a) strong linear correlation b) weak linear correlation c) impossible, d) calculation error no linear correlation
A simple random sample of 50 speeds (in mph) is obtained from cars traveling on a section of I-10 through Tallahassee. The sample has a mean of 72.3 mph and a standard deviation of 7.4 mph. Use a 0.05 significance level to test the claim that the ..
College students are a major target for advertisements for credit cards. At a university, 65% of students surveyed said they had opened a new credit card account within the past year.
A researcher is conducting proportionate stratified random sampling with a sample size of 250. Approximately how many people should be sampled from each stratum?
How large a sampl.e is needed to estimate the true proportion of home owners who have vegetable gardens to within 4 percentage points with 95% confidence?
What can you conclude from Chebyshev's theorem about the percentage of adults in the town whose heights are between 57.3 and 77.7 inches? Please show work.
the national freshman-to-sophomore retention rate has held steady at 74. a certain college has 499 of the 585 freshman
Consider a random sample of six families who are asked if their children have an influence on their vacation destination.
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