NORTHCENTRAL UNIVERSITY ASSIGNMENT COVER SHEET Student: ODEDOYIN ABEL THIS FORM MUST BE COMPLETELY FILLED IN Follow these procedures: If requested by your instructor‚ please include an assignment cover sheet. This will become the first page of your assignment. In addition‚ your assignment header should include your last name‚ first initial‚ course code‚ dash‚ and assignment number. This should be left justified‚ with the page number right justified. For example: Student: ODEDOYIN A MGT
Premium Standard deviation Arithmetic mean Sample size
1. Let X be the demand for the toy. Then X follows normal distribution with mean μ = 20000 and standard deviation σ. Then P(10000 < X < 30000) = 0.95 P( X < 20000)=0.5 P(10000 < X < 20000) = 0.475 P( X < 10000)=0.025 NORM.S.INV(0.025)=-1.96 NORM.S.INV(0.975)=1.96 Z-score of 10000 =-1.96 Z-score of 30000=1.96 σ = (30000-20000)/1.96 =10000/1.96 = 5102 Standard Deviation of 5102 The graph above shows the distribution for the demand for the Weather Teddy Bear using Specialty Toys’ forecasts based
Premium Standard deviation Normal distribution
Grenoble Ecole de Management | Research Methodology Project | Correlation between social media and emotional stability | | Christian Morris Karla LukicXinyun MA | 2014/5/5 | Research Question Does social media has impact on the emotional stability of students? Hypotheses: H1: Females have the same ability to handle personal problems as males. H2: There is higher proportion of females that frequently use social media applications for personal reasons than males. H3: Frequency
Premium Standard deviation Social media Statistics
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
Premium Arithmetic mean Standard deviation Control chart
manufacturing processes. In particular application‚ a client gave Quality Associates a sample of 800 observations taken during a time in which that client’s process was operating satisfactorily. The sample standard deviation for these data was 0.21; hence with so much data‚ the population standard deviation was assumed to be 0.21. Quality Associates then suggested that random samples of size 30 be taken periodically to monitor the process on an ongoing basis. By analyzing news samples‚ the client could
Premium Statistics Standard deviation Arithmetic mean
size of its replenishment order from Proctor & Gamble. What costs should it take into account when making this decision? [8] Q.3 Weekly demand for Motorola cell phones at Best Buy store is normally distributed with a mean of 300 and a standard deviation of 200. Motorola takes two weeks to supply a Best Buy order. Best Buy is targeting a CSL of 95 percent and monitors its inventory continuously. How much safety inventory of cell phones should Best Buy carry? What should their ROP be? [F-1(0
Premium Supply chain management Mobile phone Normal distribution
and a standard deviation of 0.018 inch. The customer will buy only those pins with lengths in the interval 1.00 ± 0.02 inch. In other words‚ the customer wants the length to be 1.00 inch but will accept up to 0.02 inch deviation on either side. This 0.02 inch is known as the tolerance. 1. What percentage of the pins will be acceptable to the consumer? In order to improve percentage accepted‚ the production manager and the engineers discuss adjusting the population mean and standard deviation
Premium Arithmetic mean Standard deviation Normal distribution
method and recommend the best training course. Table 1 – Comparative study of Course Completion Times (in hours) of the two training methods Training Method Sample Size Mean Standard Deviation Skewness Min Value Max Value 95% confidence interval for population mean 95% confidence interval for standard deviation Current 61 75.07 3.94 -0.22 65.00 84.00 74.06 - 76.08 3.35 - 4.80 Proposed 61 75.43 2.51 -0.29 69.00 82.00 74.78 - 76.07 2.13 - 3.05 From the data in Table 1
Premium Standard deviation Statistics Arithmetic mean
-0.00411 0.14881 2009 0.609266 0.116585 0.191489 The average for Goodman was 29.4%‚ Landry 2.7% and 20.6% for the index. 2. Calculate the standard deviations of the returns for Goodman‚ Landry‚ and the Market Index. (Hint: Use the sample standard deviation formula given in the chapter‚ which corresponds to the STDEV function in Excel.) Standard Deviation Goodman Landry Market Index 0.314404 0.097073 0.137937352 3. Estimate Goodman’s and Landry’s betas as the slopes of regression lines with
Premium Standard deviation Rate of return Option
of fatigue due to less help‚ whereas moms that are married will have help from their husbands. 2. What statistics were used to describe the length of labor in this study? Were these appropriate? The statistics were described using mean and standard deviation. I think these would be appropriate if there wasn’t missing information. The percentages don’t total 100% because there is data missing. 3. What other statistic could have been used to describe the length of labor? Provide a rationale for your
Premium Statistics Standard deviation Scientific control