1. Following the explosion of the 25th space shuttle flight‚ which was caused by an O-ring failure in one or more of the booster rockets‚ data from the previous 24 flights were studied. The Temperature (F) at the time of launch and whether or not there was evidence of O-ring failures for each of the previous 24 shuttle flights was determined for each flight. A logistic regression relating the Failure of O-rings to the Temperature was obtained with the following result: Estimate Std. Error z value Intercept
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In each of the assignments in this course‚ you will be dealing with the following scenario: American Intellectual Union (AIU) has assembled a team of researchers in the United States and around the world to study job satisfaction. Congratulations‚ you have been selected to participate in this massive global undertaking. The study will require that you examine data‚ analyze the results‚ and share the results with groups of other researchers. Job satisfaction is important to companies large and
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MM207 Statistics Unit IV Mid Term Project 1. In the following situation identify the implied population. A recent report on the weekly news presented the findings of a study on the effectiveness of Onglyza‚ along with diet and exercise‚ for treating diabetes. According to Bennett (2009)‚ a population is defined as “the complete set of people or things being studied” in a statistical study. Given that the information is in relation to finding the success of a drug used to care for
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sample. For example‚ age could be the variable‚ and after stratification‚ the sample might include equal numbers of subjects in the established age ranges of 20–39‚ 40–59‚ 60–79‚ and over 80. Researchers use cluster sampling in two different situations: (1) when the time and travel necessary to use simple random sampling would be prohibitive‚ and (2) when the specific elements of a population are
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Statistics Real Life Example #2Article: http://america.aljazeera.com/articles/2014/10/21/us-ebola-airports.htmlMy article is covering the recent “Ebola Outbreak”. In this‚ people are direly afraid of catching the Ebola virus. They are even going as far as screening people in airports who come from‚ and travel to‚ places where Ebola is much more spread amongst the population (mostly in Africa‚ for now). The article quotes: “Some members of Congress have urged President Barack Obama to ban all travel
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feel about taking this course. Perhaps you feel nervous‚ or intimidated‚ or excited. How can you make your friend understand how you feel‚ without just flat out saying "I feel nervous‚ etc." What details will you include? What kind of words will you use? Remember‚ your audience is your best friend. Post this essay under the name: "Friend." FRIEND Good afternoon‚ friend! I
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Meisner September 16th‚ 2012 This week’s assignment is about the use of misleading statistics. Companies and individuals use statistics in a variety of way in order to provide information on certain things. The use of misleading statistics‚ while not ethical‚ could be viewed as valuable‚ if it increases profit margins or awareness of the stated topic of the statistic in a biased way. Question number 8 provides a statistic that Vitamin E is an antioxidant that may help fight heart disease and
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Heather Rajski English 093-A5B Argument/Persuasive Essay Draft #1 10-31-2012 "Beating the Statistics" Statistics show eighty-five percent of youth in prison‚ seventy-one percent of high school dropouts‚ ninety percent of homeless and runaway children have an absent father. Fatherless children and youth exhibit higher levels of: depression and suicide‚ delinquency and teen pregnancy‚ behavioral problems‚ illicit and licit substance abuse‚ diminished self-concepts‚ and
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Descriptive writing piece I got off the bus as it came to a slow stop and as I walked past Burger King‚ the scent of greasy fast food filled my nostrils. The bus departed again‚ crawling along the road‚ leaving my sight‚ as it turned a sharp corner. An elderly man cut across my walking path to use the cash machine on the corner. As he walked towards it‚ I could see the growing disappointment on his face‚ to find it was out of order. I could now see more buses ahead of me‚ each turning and disappearing
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n = 25 Use a one-sample t-test Conditions/assumptions for a t-test •Random sample- our survey was a random sample of 25 stations •Normal distribution –we are assuming gasoline prices are normally distributed Null hypothesis: The mean regular unleaded gas prices for your region is the same as that in the study µ 0 = 3.16 Alternate hypothesis: The mean regular unleaded gas prices for your region is greater than that in the study µ A > 3.16 Find the t-test statistic: t=(x(bar)
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