Q1 In a test given to 500 students‚ the average marks was 56 and the standard deviation was 20. Find (i) the number of students exceeding a score of 60. (ii) the number of students having marks between 50 and 70. (iii) the value of marks exceeded by the top 100 students. Answer-------- (i) number of students exceeding a score of 60=210 (ii) The number of students having marks between 50 and 70=188 (iii) The value of marks exceeded by the top 100 students=73 Q2. Following
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Random sample It is often not necessary to survey the entire population. Instead‚ you can select a random sample of people/or firms from the population and survey just them. You can then draw conclusions about how the entire population would respond based on the responses from this randomly selected group of people. This is exactly what political pollsters do - they ask a group of people a list of questions and based on their results‚ they draw conclusions about the population as a whole with
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Air Force Assignment 1. Use appropriate descriptive statistics to summarize the training time data for each method. What similarities or differences do you observe from the sample data? Descriptive analysis in excel has been used to come up with relevant figures of the given data samples which is tabulated below: Descriptive Statistics | Current | Proposed | Mean | 75.06557 | 75.42623 | Standard Error | 0.505094 | 0.32091 | Median | 76 | 76 | Mode | 76 | 76 | Standard Deviation |
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As an enormous wall of gray clouds approaches‚ the anticipation grows ever so slightly with each passing moment. This warm sun-filled afternoon slowly begins its descent into a cool breezy evening as the rain commences. A few tiny droplets fall from the dark canopy above onto the carpet of green blades beneath my feet. Across the wavy pasture the verdant pine trees at the woods’ edge come alive as they sway back and forth like stalks of wheat from some lonely field in rural Nebraska. A thin layer
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Icesus Holland Brenda White English 101 16 September 2013 Descriptive Essay The beach is one of the most beautiful places in the world. Before visiting‚ I had only been to the four states‚ which is the stringy grassy fields‚ the forest of trees‚ the smelly white and black cows and pink curly tailed pigs. See I had never seen any other states but Missouri‚ Kansas‚ Oklahoma‚ and Arkansas. I love the picture in my head but it was nice to finally see something different. When my boyfriend
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STATISTICS - Lab #6 Statistical Concepts: Data Simulation Discrete Probability Distribution Confidence Intervals Calculations for a set of variables Open the class survey results that were entered into the MINITAB worksheet. We want to calculate the mean for the 10 rolls of the die for each student in the class. Label the column next to die10 in the Worksheet with the word mean. Pull up Calc > Row Statistics and select the radio-button corresponding to Mean. For Input variables:
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The great view of the Grand Canyon At the summit of the canyon‚ I can feel the clouds that are drifting are really closed to me and I can touch the clouds in the sky if I stretch my arms out. The color of sky is various from bright blue to dark blue depending on each individual’s viewpoint. Looking upward‚ I can see skies splashed with cotton white clouds and the peaks of the canyon are wrapping in clouds. Even though there are clouds a lot in the sky‚ the sun drawing water is so beautiful. There
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| Descriptive Essay | Rough draft | | Gatewood‚ Jasmine | 10/12/2012 | Myself: Person Hello kitty collection thing Homemade spaghetti food Downtown Dallas place Jasmine Gatewood English 0331.2 Ms. Fischel 10/12/12 Description Essay Downtown Dallas home of the dart and the drug dealers on every corner‚ my friends and I used to visit regularly to have a nice chipotle dinner. When you are hear you cannot help but‚ visit the many food places‚ and cultural
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Ivory Koehn 9/10/2010 Descriptive Essay Under The Raised Hand Prologue When I was a young girl learning about life and love‚ I always thought that some man would sweep me off my feet and it was my fate to be with him and only him. My mother was not a big fan of love and fate. She didn’t have a very good history of guys and relationships. She would always tell us love was not a reality and we should find someone with a lot of money. My mother is a strong feminist woman and I tried as hard
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6.14 Show that for a sample of n = 39‚ the smallest and largest Z values are – 1.96 and + 1.96‚ and the middle (i.e.‚ 20th) Z value is 0.00. 6.19 The data in the file spending represent the per-capita spending‚ in thousands of dollars‚ for each state in 2004. Decide whether the data appear to be approximately normally distributed by A. Comparing data characteristics to theoretical properties. B. Constructing a normal probability plot. 7.1. For a population containing N=902 individuals what code number
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