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Question: Insomnia and education. Is insomnia related to education status? Researchers at the Universities of Memphis, Alabama at Birmingham, and Tennessee investigated this question in the Journal of Abnormal Psychology (February 2005). Adults living in Tennessee were selected to participate in the study using a random-digit telephone dialing procedure. Two of the many variables measured for each of the 575 study participants were number of years of education and insomnia status (normal sleeper or chronic insomnia). The researchers discovered that the fewer the years of education, the more likely the person was to have chronic insomnia
(a) Identify the population and sample of interest to the researchers.
(b) Describe the variables measured in the study as quantitative or qualitative.
(c) What inference did the researchers make?
Assume that 6.37 x l 021 photons per m! arrive on the detector each second. Calculate the expected photo current under these conditions.
Given that the mean of 100 observations is 42.5 and that their standard deviation is 6.313, find the sum of the squares of the observations.
For all questions, clearly explain/show your answers. For the Analysis section, justify your answers with the appropriate graphs, statistics, equations, etc.
a special industrial battery must have a life of at least 400 hours. a hypothesis test is to be conducted with a .02
if two voters are randomly selected for a telephone survey, what is the probability that they one is a Democrat followed by a Republican? Round your answer to 4 decimal places.
This is just a prompt to help guide you with your writing; you do not need to answer all of these questions. If you want to write about a different aspect of the readings and the film, you can do so, but make sure that it pertains to the film and ..
Develop the objective function
the following sample of heights was taken from 7 cans off the assembly line12.9 12.9 12.8 12.9 13.4 13.2 12.6build a 90
the female students in an undergraduate engineering core course at asu self-reported their heights to the nearest inch.
In a study of the effectiveness of certain exercises in weight reduction, a group of 16 persons engaged in these exercises for one month and showed the following results:
A panel of 11 jurors needs to be selected from a group of 25 people. How many different juries can be selected? In a race with eight swimmers, how many different orders of finish are possible for the first four positions?
Find expected percentage in employment growth if percentage of product or process innovators is 2%.- Find an estimate of an observed value y for x = 3.5.
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