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In a test of the effectiveness of garlic for lowering cholesterol, 42 subjects were treated with garlic in a proceessed tablet form. Cholesterol levels were measured before and after treatment. The changes in the leves of LDL cholesterol (in mg/dL) have a mean of 2.8 and standard deviation of 19.6. Complete parts (a) and (b) bellow. a) What is the best point estimiate of the population mean net Change in LDL cholesterol afer the garlic treatment? The best point estimiate is ___ mg/dL. b)contstruct a 90% confidence interval estimate ofthe mean net change LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducling LDL cholesterol? What is the confidence interval estimate of the population mean u? ___mg/dL < u < ___ mg/dL c.) What does the confidence interval suggest about the effectiveness of the treatment?
the following information is collected from students upon exiting the campus bookstore during the first week of
a survey was carried out to find the salaries for technicians working in maintenance at atlanta international airport.
Find out the slope, b, and the intercept, a, for the least-squares line. Write the equation of the least squares line.
a researcher is studying the relationship between earnings for major electronic firms and research and development
an airport official wants to prove that the proportion of delayed flights for airline a denoted as p1 is less than the
The McBurger restaurant chain claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1 minute.
As an experiment, a self-confessed connoisseur of cheap popcorn carefully counted 773 kernels and put them in a popper. After popping, the unpopped kernels were counted. There were 86. a)Construct a 90% confidence interval for the proportion of all k..
A company is creating 5 new divisions and 8 managers are eligible to be appointed head of a division. With 8 managers trying for 5 jobs, how could the five new heads be arranged?
a laboratory is testing the concentration level in mgml for the active ingredient found in a pharmaceutical product. in
consider one city in a similar survey where the mean is working time is 508 minutes. assume the standard deviation of
media coverage influences the publics perception of the criminal justice system and the policy agendas of those within
the number of people arriving for treatment at an emergency room can be modeled by a poisson process with a rate
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