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A study of cats and dogs found that 29 of 50 cats and 19 of 50 dogs slept more than 10 hours per day. At the 0.05 level of significance, is there sufficient evidence to conclude that a difference exists between the proportions of cats and dogs that sleep more than 10 hours per day?
Working at Company X is very stressful for any human being. Medecines Sans Frontires stepped in to see if there is any possible violations of human rights at the notorious Company X.
what is the sampling distribution model of the percent passing developmental courses for your campus in Fall 2009 and provide the percentages between which we would expect to see 68% of the sampling distribution, 95% of the sampling distribution
What is the probability that a particular driver has two speeding violations.
Assume that the heights of adult white men have a mean of 67.9 inches and a standard deviation of 2.8 inches. If 64 men are randomly selected, find the probability that they have a mean height greater than 68.9 inches.
You're in charge of an experiment to evaluate a treatment which is advertised as being 90% effective at killing a particular insect. You plan an experiment in which the treatment is tested on 200 insects.
What is the probability that the second one selected is defective given that the first one was defective? (c) What is the probability that both are defective?
Some television stations attempt to gauge public opinions by posing a question on the air and asking viewers to call to give their opinions.
Based on the following results, is LIFO more effective in keeping the value of his inventory lower? Product FIFO LIFO. What is the null hypothesis?
Find out the constant using probability density function also cumulative distribution function. Assume X be a continuous random variable with probability density function.
The consequences of the central limit theorem is that if we end up averaging the measurements of a particular quantity, the distribution of an average tends on going toward a normal one?
Enter the data and use the appropriate commands to find the mean, median, mode, sample standard deviation, population standard deviation, 10% trimmed mean, and data count.
In the end, of course, conclusions are drawn about how an entire population would respond based on the responses from randomly selected group of people.
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