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Find a bivariate data set relating to your work with a sample size of 10 or more.
a) Determine which is the dependent variable Y and which is the independent variable X. Explain your reasoning.
b) Draw a scatterplot and indicate the relationship if any. Explain.
c) Compute the least-squares regression equation. Show major line items of your work.
Determine the probability of fatal accident over a lifetime? Describe your reasoning carefully. Hint: Suppose independent events. Why might the supposition of independence be violated?
The mean of a sample is 22.5. The mean of 1000 bootstrapped samples is 22.491. The bias of the bootstrap mean is
If the weight distribution is known to be normally distributed, do the data support the veterinarian's suspicion? Conduct a hypothesis test at the 5% significance level. Define your parameter (μ), state your hypotheses, conduct the test and write ..
Examined the effect of body position on blood pressure
Tim has two more problems to solve on his test, but he doesn't know how long it will take to finish them. He assigns mutually irrelevant normal distributions to the times
A university has found that 20% of its students withdraw without completing the introductory statistics course. Assume that 20 students have registered for the course this semester.
Use the binomial distribution formula to calculate the probability that a) out of 5 adults, none is concerned that employers are monitoring phone calls.
Researchers routinely choose an alpha level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower alpha level (e.g., 0.01)? What are some situations in which you might accept a higher level (e.g., 0.1)?
Internal study by Technology Services department at Lahey Electronics disclosed company employees get the average of 2 emails per hour. Suppose arrival of these emails is approximated by Poisson distribution.
We can think of this as the value of mew that maximizes f(y), the probability that our observed value of y occurs.
Let 3 trails (they may not be independent), each of which is either success or not. Let X denotes number of successes. Assume E[X] = 1.8. Determine the largest possible value of P(X=3)?
Find out the critical value for the given degrees of freedom of the F-test also the lower-tailed critical value of F test for the similar level of significance
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