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Find solutions to the following problems. Be sure to include all relevant information for each of the following problems, including hypotheses, critical value, degrees of freedom, and a statement about significance. •A researcher hypothesizes that people who listen to music via ear buds have greater hearing loss than those in the general population. On a standard hearing test, the mean (μ) is 24.75. Higher values indicate better hearing; lower values indicate greater hearing loss or worse hearing. The researcher gave this same test to a random sample of 30 individuals who regularly use ear buds. Their average score on the hearing test is 21.57, s = 3.85. Determine if using ear buds significantly reduces hearing. •As an industrial psychologist, you have been hired by a large hospital to automate the admitting procedure and reduce the admission time. Previously, it took an average of 40 minutes to admit each patient, with a standard deviation of 9 minutes. You create a new computerized procedure and find that your automated procedure takes an average of 34.5 minutes for the 35 patients in your pilot study. Determine if your system significantly reduced admit time. •Dr. Simpson was surprised to learn that her 28 students get on average 7.2 hours of sleep per night (s=0.80). She had just read that the national average is 7 hours per night. Determine if Dr. Simpson's college students get significantly more sleep than the national average.
an article that deals with sleep and shift-workers.1.what can you tell us about the journal that this article was
Prepare a report (see below) with your ranking of the judges based on the probabilities and conditional probabilities as well as the analysis of each court. Include the following seven (7) items in table format to support your ranking. Be sure to use..
How many categories in the ACME transportation table are qualitative and what is the average number of merchandise per order, for all orders? Round to the nearest integer and what is the standard deviation of all orders in this sample?
1. introductionexplain the purpose of the study.ii. summary of data collectionidentify sample population sampling frame
Build a regression model
State the five types of central tendency in general use. Which of these are most frequently used in SPC work and calculate the median for the group of results tabulated below: 1,3,4,6,7,9,11,14,16,17,18.
i. truefalse1.nbsp a b if and only if b isin a and a isin b.2.nbsp a cap b ? c a ? b cap a ? c3.nbsp ac c nbsp
first save this file to your computer. answer each of the following questions then resave the file along with your
1. a researcher studying the effects of environment on mood asks participants to sit alone in a waiting room for 15nbsp
Evaluate the correlation coefficient.
Determine the correlation coefficient. Find the predicted value of Y given X = 75. Give an interpretation of the predicted value in the context of the problem.
condence interval fornbspmu when sigma is knownsuppose n 9 people are selected at random from a large population.
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