weight reduction program revealed the mean loss to be 9 pounds. At the .05 level of significance‚ can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value. 32. Dole Pineapple‚ Inc.‚ is concerned that the 16-ounce can of sliced pineapple is being overfilled. Assume the standard deviation of the process is .03 ounces. The quality control department took a random sample of 50 cans and found that the arithmetic mean weight was 16.05 ounces. At the
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Case 4: Pacific National Bank Pacific National Bank is a medium-sized bank with 21 branches. Until very recently‚ Pacific did not operate its own automatic teller machines (ATMs); instead‚ it relied on an outside vendor to operate these. Ninety percent of the ATM customers obtained cash advances with non-Pacific credit cards‚ so the ATMs did little to directly improve Pacific’s own banking business. Operations Vice President Maria Perez wants to change that‚ by having Pacific offer a broader
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Contents Univariate Data 2 Central tendency 2 Mean 2 Median 3 Mode 3 Trimean 3 Trimmed Mean 3 Spread 3 Range 3 Semi Inter Quartile Rang 3 Variance and Standard Deviation 3 Skew 3 Graphical Representations 4 Frequency Polygons& Cumulative Frequency Polygons 4 Histograms & Bar Graphs 4 Stem and Leaf plots 4 Box Plots 4 Describing Bivariate Data 4 Scatterplots 4 Pearson’s Correlation 4 Spearman’s Rho 4 Probability 4 Binomial Distribution 4 Assumptions:
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66 | | | Education | 850 | 11.64 | | | Recreation | 1200 | 16.44 | | | Others | 1180 | 16.16 | Total | 7300 | 100 | Table 1 PIE CHART BAR CHART LINE GRAPH COMMENTS/SUMMARY (PART A) i. Determining the mean and standard deviation The mean and standard deviation of allocation of income cannot be determined;
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characteristics of a population for which a mean/median/mode would be appropriate? Inappropriate? The analysis of data begins with descriptive statistics such as the mean‚ median‚ mode‚ range‚ standard deviation‚ variance‚ standard error of the mean‚ and confidence intervals. These statistics are used to summarize data and provide information about the sample from which the data were drawn and the accuracy with which the sample represents the population of interest. The mean‚ median‚ and mode are measurements
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Chapter 1 THE PROBLEM AND ITS SETTING Background of the Study In this era‚ most of the students are acquire to make some extra efforts on many fronts; it involves regulating their learning through the use of effective learning techniques. According to Target Informatics Pvt. Ltd. in India (2013)‚ today’s students are burned with loads to study. Study curriculum has become more extensive and complex than ever before. They only carry ever increasing weight of study material on their shoulders but
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locations are mean‚ median‚ mode‚ weighted mean‚ geometric mean‚ percentiles‚ and quartiles. If these measures are computed for data from a sample it’s called sample statistics. If these measures are computes as population it’s called population parameters. A sample statistic is mentioned to as the point estimation of the agreement with population parameter. The most important measure of location is the mean. This measure of location provides a measure of central location. The mean of a data set
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European Journal of Social Sciences – Volume 9‚ Number 1 (2009) Employability Skills Among the Students of Technical and Vocational Training Centers in Malaysia Fitrisehara Kazilan Universiti Putra Malaysia Ramlah Hamzah Corresponding Author‚ Associate Professor‚ Faculty of Educational Studies Universiti Putra Malaysia‚ 43400 UPM Serdang Selangor‚ Malaysia E-mail: ramlah@educ.upm.edu.my Tel: 603-89468136; Fax: 603-89468246 Ab. Rahim Bakar Universiti Putra Malaysia Abstract The purpose of this
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Z –Test: a statistical test used for inference (inference – is the act or process of deriving logical conclusions from evidence‚ statements‚ ideas‚ etc. known or assumed to be true) which determines if the difference between a sample mean and the population mean is large enough to be statistically significant‚ that is‚ if it is unlikely to have occurred by chance. The Z – test is used primarily with its standardized testing to determine if the test scores of a particular sample of test takers are
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CHAPTER Statistical Quality Control Before studying this chapter you should know or‚ if necessary‚ review 1. 2. Quality as a competitive priority‚ Chapter 2‚ page 00. Total quality management (TQM) concepts‚ Chapter 5‚ pages 00 – 00. 6 LEARNING OBJECTIVES After studying this chapter you should be able to 1 2 3 4 5 6 7 8 9 Describe categories of statistical quality control (SQC). Explain the use of descriptive statistics in measuring quality characteristics. Identify and describe causes
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