Construct a histogram and an ogive
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Q: Major tion about every pitch thrown in every game of every season. Statistician Jim Albert compiled…
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Q: Approximately what proportion of these four-seam fastballs would you expect to have speeds between…
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Q: Major League Baseball now records information about every pitch thrown in every game of every…
A: Here, µ=92.12, σ=2.43 The z score for 88.2 and 4.2 is calculated as follows:
Q: Major League Baseball now records information about every pitch thrown in every game of every…
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Construct a histogram and an ogive
Given that
Class | Frequency |
15 - 18 | 2 |
19 - 22 | 5 |
23 - 26 | 4 |
27 - 30 | 5 |
31 - 34 | 4 |
The value and is estimated as,
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- Which of the following statements about the histogram are true? Select all that apply.Major League Baseball now records information about every pitch thrown in every game of every season. Statistician Jim Albert compiled data about every pitch thrown by 20 starting pitchers during the 2009 MLB season. The data set included the type of pitch thrown (curveball, changeup, slider, etc.) as well as the speed of the ball as it left the pitcher's hand. A histogram of speeds for all 30,740 four-seam fastballs thrown by these pitchers during the 2009 season is shown below, from which we can see that the speeds of these fastballs follow a Normal model with meanu = 92.12 mph and a standard deviation of o = 2.43 mph. 85 90 100 speed (mph) Compute the z-score of pitch with speed 95.8 mph. (Round your answer to two decimal places.) 1.5 Approximately what fraction of these four-seam fastballs would you expect to have speeds between 90.2 mph and 90.8 mph? (Express your answer as a decimal, not a percent, and round to three decimal places.) Approximately what fraction of these four-seam…Construct a spreadsheet simulation model to simulate 500 rolls of a die with the six sides numbered 1, 2, 3, 4, 5, and 6. Construct a histogram of the 500 observed dice rolls. For each roll of two dice, record the sum of dice. Construct a histogram of the 500 observations of the sum of two dice. For each roll of three dice, record the sum of dice. Construct a histogram of the 500 observations of the sum of three dice. For each roll of four dice, record the sum of dice. Construct a histogram of the 500 observations of the sum of four dice. Compare the histograms in parts a, b, c, and d. What statistical phenomenon does this sequence of charts illustrate?
- Major League Baseball now records information about every pitch thrown in every game of every season. Statistician Jim Albert compiled data about every pitch thrown by 20 starting pitchers during the 2009 MLB season. The data set included the type of pitch thrown (curveball, changeup, slider, etc.) as well as the speed of the ball as it left the pitcher’s hand. A histogram of speeds for all 30,740 four-seam fastballs thrown by these pitchers during the 2009 season is shown below, from which we can see that the speeds of these fastballs follow a Normal model with mean μ = 92.12 mph and a standard deviation of σ = 2.43 mph. Compute the z-score of pitch with speed 89.4 mph. (Round your answer to two decimal places.)Approximately what fraction of these four-seam fastballs would you expect to have speeds between 88.2 mph and 95 mph? (Express your answer as a decimal, not a percent, and round to three decimal places.)Approximately what fraction of these four-seam fastballs would you expect…draw a histogram that is symmetric but not mound-shapedA group of 80 students took a statistics Exam in the following scores were recorded68 84 75 82 68 90 62 88 76 93 73 79 88 73 58 93 71 59 58 51 61 65 75 87 74 62 95 78 63 72 66 96 79 65 74 77 95 85 78 86 71 78 78 62 80 67 69 83 76 62 71 75 82 89 67 58 73 74 73 65 81 76 72 75 92 97 57 63 68 83 81 82 53 85 94 52 78 88 77 71 Calculate median exam score
- A psychologist developed a new test of adult intelligence. The test was administered to 20 individuals and the data entererd into the Microsoft Excel Online file below. Construct a stem-and-leaf display for the data, using a leaf unit of 1.Express the alternative hypothesis in symbolic form. A psychologist claims that the mean amount of time (in hours) that females spend in talk therapy is more than that of men. Assume that two samples are independent. Let the female talk therapy times be the first population and the male talk therapy times be the second population.What are some ways to ensure that respondent information is kept anonymously? Select all that apply. U Start with coding the respondent's name so that information cannot be tracked to a name or other identifying data. Store the data in a system that is locked with passwords, such as an Excel spreadsheet or other database. Store hard-copy data (such as surveys) in a locked cabinet that is only accessible by one or two researchers. O Have respondents use pseudonyms.
- Does the type of instruction in a college statistics class (either lecture or self-paced) influence students’ performance, as measured by the number of quizzes successfully completed during the semester? Twelve students were recruited for the study. Students received the lecture instruction or a self-paced instruction. The total number of quizzes completed during teach type of instruction appear below.Base on the same given data uploaded in module 4, will you conclude that the number of bathroom of houses is a significant factor for house price? I your answer is affirmative, you need to explain how the number of bathroom influences the house price, using a post hoc procedure. (Please treat number of bathrooms as a categorical variable in this analysis) Base on the same given data, conduct an analysis for the variable sale price to see if sale price is influenced by living area. Summarize your finding including all regular steps for your method. Also, will you conclude that larger house corresponding to higher price (justify)?The histogram below shows the ages (in years) of Honda Civic automobiles listed for sale on the Seattle Times Web site on November 26, 2003. 20 15 10 4 6 8 10 12 14 16 18 Age (years) Which of the following terms apply to this histogram? (Select all that apply.) O negatively skewed(to the left) O uniform O symmetric O bimodal O unimodal O positively skewed(to the right) hp # of cars