He should focus on finding a location with waterfront view, since his potential client favors view over location’s distance. 3. With respect to the restaurant’s atmosphere, is a string quartet preferred over a jazz combo? Paired Samples Statistics Mean N Std. Deviation Std. Error Mean Pair 1 Prefer String Quartet 2.50 400 1.420 .071 Prefer Jazz Combo 3.70 400 1.221 .061 Ho: prefer string quartet- prefer jazz combo=0 H1: prefer string quartet – prefer jazz combo not equal
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Measurement Scales If a researcher is going to use statistics properly, it is crucial to consider the kind of data about which descriptive statistics are to be calculated or to which will be applied some kind of statistical test. Statistical analysis, even simple analysis as counting, requires that each characteristic to be studied be assigned a unique value. Sometimes, especially in qualitative research with small samples, this value can be a word or symbol. For example, the interviewers could
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[pic] The results change. The coefficient on seat belt useage is now negative and the coefficient is statistically significant. The estimated value of βsb_useage=-0.0037 d. The time effects are statistically significant .. the F-statistic .. 10.91 with a p-value of 0.00. The results in (3) are the most reliable. e. A 38% increase in seat belt useage from 0.52 to 0.90 is estimated to lower the fatality rate by 0.00372* 0.38= 0.0014 fatalities per million traffic miles.
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University of Central Punjab Faculty of Management Studies Assignment 02 (Summer-2012) Course Title: Business Statistics Course Code: (QM2013) Section: A Resource person: Prof. M Aslam Javed. Program: BBA/BSIS/BSSS/MBA Marks: 10 Submission Date: Sep. 01, 2012 Name: ______________________________ Registration Number: _________________ Question 1: The marks obtained by 12 students in December test (X) and promotion test (Y) are given below: Student 1 2 3 4 5 6 7 8 9 10 11 12 X 41 45 50
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VARIABLES=Income /STATISTICS=MEAN STDDEV VARIANCE RANGE MIN MAX SKEWNESS. Resources Processor Time 00:00:00.00 Elapsed Time 00:00:00.02 [DataSet0] Descriptive Statistics N Range Minimum Maximum Mean Std. Deviation Statistic Statistic Statistic Statistic Statistic Statistic Three-Year-Average Median Income(2008-2010) 51 $29,453 $36,850 $66,303 $50,734.18 $7,555.310 Valid N (listwise) 51 Descriptive Statistics Variance Skewness Statistic Statistic Std. Error Three-Year-Average
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CASE STUDY 5: Statistical Process Control Ikrom Abdullaev M0158958 Shamil Tlukashaev Chuan Lai Exercise A: Control Charts for Variables Step 1: Gather data Four samples of five observations (launches) each were arranged in tabular form. The mean and range for each sample determined and computed the mean of the means and the mean of the ranges. Data Table SampleNumber | Observation 1 2 3
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to review basic hypothesis testing and regression techniques. There is an appendix in your textbook, Appendix C: Using Excel to Conduct Analysis, which may help you with running regressions in Microsoft Excel. You may also wish to use a basic statistics text for guidance if needed. I have also provided you with a table with the t distribution. If you have an older version of EXCEL and have not previously loaded the Analysis ToolPak, go to TOOLS, ADD-INS, Analysis Tool Pak. This will load
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salaries for all baseball players in the league 4. Population, because it is a subset of all athletes 2. Determine whether the underlined value is a parameter or a statistic. The average age of men who have walked on the moon was 39 years, 11 months, 15 days. Is the value a parameter or a statistic? Parameter Statistic 2 Determine whether the data set is a population or a sample. Explain your reasoning. The number of pets for 20 households in a town of 300 households. Choose the
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(c) Hypothesis test: 1) For TXRH LOGR: H0: µLOGR = 0 HA: µLOGR ≠ 0 α=0.05 t~t2012, 0.025 (n = 2013) tj0 = (0.000519-0) / (0.024138/√2013) = 0.96, t2012, 0.025 = 1.96 Since tj0 < t2012, 0.025, we accept H0 at 5% significance level, otherwise we reject H0. 2) For HPQ LOGR: H0: µLOGR = 0 HA: µLOGR ≠ 0 α=0.05 t~t2012, 0.025 (n = 2013) tj0 = (0.000039-0) / (0.021745/√2013) = 0.08, t2012, 0.025 = 1.96 Since tj0 < t2012, 0.025, we accept H0 at 5% significance level, otherwise we reject H0. 3) For
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interest and then the Sample: is the set of data drawn from the pop. Parameter: A descriptive measure of population Statistic: A descriptive measure of a sample “A politician is running for office of mayor in a city w/ 25,000 voters. In survey, 48% of the 200 voters that were interviewed say they will vote for her.” Pop: voters, Sample: 200 voters, Parameter/Statistic: Statistic Descriptive vs. Inferential Stats Descriptive: Organize, Summarize, Simplify, Presentation of data describes data
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