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1. The mean time to expose a single panel in a circuit-board plant is 2 minutes with a standard deviation of 1.5 minutes. (a) What is the natural coefficient of variation? (b) If the times remain independent, what will be the mean and variance of a job of 60 panels? What will be the coefficient […]
Topic: Asset Management Question 1 (Diversification 0.5pt) Consider the following: 1. Strategy I: Suppose that you invest $100 in a stock. There is a 60% chance that the stock will go up in value by $10 at by the end of this year. There is a 40% chance that the stock will go down in […]
Unit 4 Discussion – Am I Normal? The average height for all males is 69.3 inches with a standard deviation of 2.8 inches. For females, the average height is 64 inches and the standard deviation is 2.8. These are population values. For this week’s discussion, you will calculate a z-score based on your own height […]
1. Researchers often choose to reject the null hypothesis when there is less than a 5% likelihood of observing a given pattern in the data if the null hypothesis is true. They select 5% because a. It’s a rule handed down by Isaac Newton b. It’s the established scientific norm c. It’s the absolute best […]
Use the hsbdata.sav file to do these problems with one or more of these variables: math achievement, mother’s education, ethnicity, and academic track. Use Tables 3.2, 3.3, and the instructions in the text to produce the appropriate plots or descriptive statistics. Be sure that the plots and/or descriptive statistics make sense (i.e. that they are […]
Using the data set you collected in Week 1, excluding the super car outlier, you should have calculated the mean and standard deviation during Week 2 for price data. Along with finding a p and q from Week 3. Using this information, calculate two 95% confidence intervals. For the first interval you need to calculate […]
Grouped Descriptive Statistics It was suggested to the retailer that the 130 transaction values could also be summarised in a grouped table a. Using the three table templates provided in the Excel data file as a starting point, construct three tables in Excel. The first table should show the frequencies and percentage frequencies. […]
The tasks identified here must all be completed and presented in a single report completed in MS Word format. When this report is submitted it must be done so in conjunction with the full completed Excel workbook showing all your relevant calculations and workings. 1. Load up the Dataset spreadsheet Excel workbook provided and create […]
For each Chapter, answer each question in your own words using no more than 2-3 properly constructed sentences . Be sure to include support for any “choice” answers. Use declarative sentences, citing factual information based on definitions, procedures, etc. Chapter 1 1. Explain the difference between a population and a sample . 2. Explain the […]
1. For a dataset, without constructing of the frequency distribution table; how to obtain the class width of frequency distribution table if the number of classes is given? Note: Use the formula in the slides; here frequency distribution table is not provided. 2. Explain the difference between a frequency distribution table and a relative frequency […]
