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A simple random sample of 40 salaries of NCAA football coaches has a mean of $415,953 and a standard deviation of $463,364. Construct a 95% confidence interval estimate of the mean salary of an NCAA football coach.
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In a study designed to test the effectiveness of acupuncture for treating migraine, 142 subjects were treated with acupuncture and 80 subjects were given a sham treatment. The numbers of migraine attacks for the acupuncture treatment group had a mean of 1.8 and a standard deviation of 1.4. The number of migraine attacks for the sham treatment group had a mean of 1.6 and a standard deviation of 1.2.
Construct the 95% confidence interval estimate of the mean number of migraine attacks for those treated with acupuncture.
Construct the 95% confidence interval estimate for the mean number of migraine attacks for those given the sham treatment
Compare the two confidence intervals. What do the results suggest about the effectiveness of acupuncture?
The company SlimDown makes weight loss products.
Determine the number of stores that must be sampled in order to estimate the true proportion to within 0.05 with 95% confidence using the large-sample method.
Movie Budgets. How does the cost of a movie depend on its length? Data on the cost (millions of dollars) and the running time (minutes) for 29 films of 2005 are provided in the SPSS data set called Movie_budgets.sav (found on your class site..
Use data from all networks, not just CBC movies and how well does this regression analysis explain the ratings?
What is the shape of the distribution of credit hours? Compute summary statistics and use StatCrunch to construct a histogram of the credit hour data. Include a short paragraph answering the question. - RSCH202 - Quantitative Data Analysis Assignme..
Explain or predict the response variable in every regression study, we use one or more explanatory variables. These variables are also called predictor variables or independent variables.
EIHP Assessment 2 – Interpreting Basic Statistical Data, Article: Ramirez, G. & Beilock, S.L. (2011). Writing about testing worries boosts exam performance in the classroom. Science, 331. 211-213. This article is page 74-77 of your handbook.
question 1an airline was interested in measuring the length of time customers have to wait in the queue prior to
Locate the original poll, summarize the poling procedure (background on how information was gathered), the sample surveyed.
Develop a model for the Total Cost to put on the seminar. Let x represent the number of students who enroll in the seminar - develop a model for the Total Profit if x students enroll in the seminar.
Convariance matrix
an investigator wants to assess whether smoking is a risk factor for pancreatic cancer. electronic medical records at a
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