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A fair six-sided die is rolled six times. If the face numbered k is the outcome on roll k for k = 1, 2, 3, 4, 5, 6 we say that a match has occurred. The experiment is called a success if at least one match occurs during the six trials. Otherwise, the experiment is called a failure. The outcome space is O = {success, failure}. Let event A = {success}. Which value has P(A)?
Suppose a worker needs to process 400 items. The time to process each item is exponentially distributed with a mean of 2 minutes, and the processing times are independent.
(a) Find the probability that at least nine of the printers operate correctly upon installation.
A large university says the mean number of classroom hours per week for full-time faculty is more than 9. A random sample of the number of classroom hours for full-time faculty for one week is listed. At 945; = 0.05 , test the university's claim.
By using a level of significance of .10, is there evidence that the population mean weight of the candy bars is greater than 4.3?
A researcher wants to see if there is a relationship between birth order and personality. A sample of n = 100 people is obtained, all of whom grew up in 3-child families.
The sample mean of the accounts is found to be y-bar = $94.22, and the sample variance is equal to $455.21. Estimate mu and place a bound on the error of estimation.
a) identify the null and alternative hypothesis, show work b) determine the test statistic, show work c) determine the p value, show work
Find the probability that a randomly selected worker is not exposed to the LD50 but dies.
A shirt manufacturer determines by observation that the circumference of the neck of a college man is a random phenomenon approximately
One of the oldest and most respected survey research firms is the Gallup Organization. This organization makes a number of special reports available.
If the mean and trimmed mean are nearly identical, it might be thought that it makes little difference which measure of location is used. Based on your answer to the previous problem, why might it make a difference?
Question: What is the difference between Alpha and P-Value and its Statistical Significance?
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