1. A radio station that plays classical music has a “By Request” program each Saturday night. The percentage of requests for composers on a particular night are listed below: Composers Percentage of Requests Bach 5 Beethoven 26 Brahms 9 Dvorak 2 Mendelssohn 3 Mozart 21 Schubert 12 Schumann 7 Tchaikovsky 14 Wagner 1 a. Does the data listed above comprise a valid probability distribution? Explain.
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Confidence Intervals and Hypothesis Testing Name: Math 256‚ Nelson 1. A soft-drink machine is regulated so that the amount of drink dispensed is approximately normally distributed with a standard deviation equal to 1.5 deciliters. Find a 95% confidence interval for the mean of all drinks dispensed by this machine if a random sample of 36 drinks had an average content of 2.25 dl. 2. The heights of a random sample of 50 college students showed a mean of 174.5 centimeters. Assume the
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Statistics in Business Statistics is a mathematical science pertaining to the collection‚ analysis‚ interpretation or explanation‚ and presentation of data. It also provides tools for prediction and forecasting based on data. It is applicable to a wide variety of academic disciplines‚ from the natural and social sciences to the humanities‚ government and business ("Statanalysis Consulting"‚ 2013). Statistics is used in decision making that affects our everyday lives. The study of statistics
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“Facts are stubborn things‚ but statistics are pliable (Mark Twain).” This summary will address the definitions of statistics‚ types and levels‚ the role of statistics in business decision making‚ and lastly give a few examples in which statistics was used. Statistics According to Investopedia‚ the definition of statistics is “a type of mathematical analysis involving the use of quantified representations‚ models and summaries for a given set of empirical data or real world observations. Statistical
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Rape Statistics Working at a Historic Black College/University (HBCU) for the past three (3) years‚ I just recently came in contact with a rape victim. I’ve seen the shows but never thought‚ I would be a person to come in contact with one. Talking to the different individuals involved with the student case‚ I decided to do my research paper on rap victim. Specifically‚ I am looking at how the likelihood of being the victim of a violent crime in the United States is related to gender and
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Definition: Statistics is the study of the collection‚ organization‚ analysis‚ interpretation and presentation of data. It deals with all aspects of this‚ including the planning of data collection in terms of the design of surveys and experiments. A statistician is someone who is particularly well-versed in the ways of thinking necessary for the successful application of statistical analysis. Such people have often gained experience through working in any of a wide number of fields. Some
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Statistics can be defined as “ the science that deals with the collection‚ classification‚ analysis‚ and interpretation of numerical facts of data‚ and that‚ by use of mathematical theories of probability‚ imposes order and regularity on aggregates of more or less disparate elements” (Dictionary.com‚ LLC‚ 2008). Yet how do we use these specific elements in our everyday working lives? Many don’t realize the extent to which we as a culture base our decisions on statistics. We us them in something
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Statistics: The Applications of Statistics Kashaf Bakali 201105803 Qatar University Post Foundation English 203 – 106 December 17‚ 2012 Dr. James Scotland What is statistics? Statistics is a study which includes the collection‚ analysis‚ organization‚ interpretation and presentation of data. The collection‚ organization‚ analysis‚ interpretation and presentation of data help people in numerous ways; from prediction of diseases and weather up to being useful in business. These
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better decisions when they use all available information in an effective and meaningful way. The primary role of statistics is to to provide decision makers with methods for obtaining and analyzing information to help make these decisions. Statistics is used to answer long-range planning questions‚ such as when and where to locate facilities to handle future sales. 2 Definition s Statistics is defined as the science of collecting‚ organizing‚ presenting‚ analyzing and interpreting numerical
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Statistics in Business Katherine Wolf QNT/275 April 3‚ 2015 Barry Adkins Statistics in Business Statistics is all about collecting numerical data‚ organizing it‚ and interpreting the data to form hypothesis. While interpreting the data we are able to draw all kinds of conclusions from weather forecasts to how much money a company is projected to make over the next year. There are different types of statistics that can be used for different outcomes. You have to first identify the
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