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Suppose that the referee for a football game has two coins that look the same, except that one of them is fair and the other is weighted to fall heads with probability .85. The referee doesn't know which is which, and decides to select one of them and ?ip it 20 times and if it lands heads 17 times or more then the referee will designate that coin as the weighted one.
a) If the coin the referee selects is fair, what is the probability that it gets designated as being weighted?
b) If the coin is weighted, what is the probability that the test designates it as being weighted?
The data is based on 214 children with acute otitis media who participated in a randomized clinical trail each child had OME at the beginning of the study in either one or both ears and was randomly assigned to receive a 14 day course of one of tw..
Label and describeeach step of the hypothesis testing procedure, and be sure to specify whether this is a one-tailed or two-tailed test.
Clouds were randomly seeded or not with silver nitrate. Rainfall amounts were recorded from the clouds. The purpose of the experiment was to determine if cloud seeding increases rainfall. The following data is obtained:
11% needed to be serviced once, 5% twice, 4% three times, and none required more than three repairs. what are the expected no of repairs per year.
Conduct a 3-period moving average, an exponential smoothing forecasting using an alpha of .25, and a seasonal forecast with 3 seasons.
If the restaurant stocks 400 hamburgers and 150 chicken sandwiches for a given day, what is the probability that it will run out of hamburgers or chicken sandwiches (or both) that day? Assume that the demand for hamburgers and the demand for chick..
An education expert is researching teaching methods and wishes to interview teachers from a particular school district. She randomly selects ten schools from the district and interviews all of the teachers at the selected schools.
Use the analysis of variance (α = 0.05) to find out whether this data is sufficient to conclude that there are significant differences between feedback conditions.
In an article in Accounting and Business Research, Carslaw and Kaplan investigate factors that in?uence "audit delay" for ?rms in New Zealand.
Write matlab Code for regression. one paragraph discussion of the project comprising method used and conclusions: regression results
A researcher is interested in estimating noise levels in decibels at area urban hospitals. She wants to be 90% confident that her estimate is correct. If the standard deviation is 4.13, how large a sample is required to get the desired information..
The annual income of a large group of supervisors at Belco Industries follows the normal distribution. The mean amount earned yearly is $48,000 and the standard deviation is $1,200.
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