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Lying to a teacher. Refer to the previous exercise. Suppose that you select a student from the subpopulation of liars.
What is the probability that the student is female? Be sure to show your work and indicate all the rules that you use to find your answer.
What is the probability that the person in the ith position, 1 ≤ i ≤ b+g, is a girl?
Suppose you take a random sample of 25 from a lot of 1,000 items but later realize that you should have selected a sample of 40 items instead. How do you correct this error?
mars inc. claims that they produce mampms with the following distributions
4. Why is a 99% confidence interval wider than a 95% confidence interval?
We will select a random sample of 8 cigarettes and conduct a hypothesis test at the 10 % level of significance to determine whether the true mean nicotine content of all cigarettes differs from 8.4 mg.
the average movie admission price for a recent year was 7.18. the population variance was 3.81. a random sample of 15
The length of the thorax (where the wings and legs attach) in a population of male fruit flies is approximately Normal with a mean 0.800 (mm) and standard deviation 0.078 mm. What proportion of flies have thorax length 0.9 mm or longer?
If you spin a fair coin 100 times,- Intuitively, how many heads do you expect?- Use the formula for expected value to verify your intuition.
Mean SAT score is computed for each sample. If the sample size is n=2,500, find the mean and standard deviation of the distribution of sample means.
Jan finished culinary school and wants to start her own pastry business. She has a few options, and believes that a sensitivity analysis would help her to make the best business decision. She is considering three options, and is confident that..
Computing probability values using normal distribution - Find the proportion of the observations will fall in the interval from 40 to 60?
Suppose 40% of a student population possess works part-time. If a random sample of size 300 is drawn from the population, what is the probability that 44% or fewer of the samples works part-time?
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