Q.No.1. Take 40 numbers randomly and find its i. a. P75, Q3 Median, Q,„D.P: Make a grouped frequency distribution of that data and again calculate its i. 50 b. i. P75, Q3 ii. Median, Q,„D5.P50" Compare your results of part(a) and part (b), also comment on your results. C. Answer: -
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A: The given classes of the frequency distribution are 60-120, 120-180, 180-240, 240-300, 300-360.
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A: We have to fill given table.
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A: Here is the graph
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Q: 49 57 38 73 81 61 83 90 87 74 74 59 76 65 69 60 71 57 61 69 54 56 69 68 78 85 40 85 59 80 65 85 49…
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A: Mean for grouped data:The formula to find mean for grouped data is as follows:
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- Item 9 At a research facility that designs rocket engines, researchers know that some engines fail to ignite as a result of fuel system error. From a random sample of 40 engines of one design, 14 failed to ignite as a result of fuel system error. From a random sample of 30 engines of a second design, 9 failed to ignite as a result of fuel system error. The researchers want to estimate the difference in the proportion of engine failures for the two designs. Which of the following is the most appropriate method to create the estimate? A one-sample z-interval for a sample proportion A A one-sample z-interval for a population proportion B A two-sample z-interval for a population proportion C A two-sample z-interval for a difference in sample proportions D A two-sample z-interval for a difference in population proportionsWe have a sample of 103 observations, which range in value from 25 to 67. Which of the following proposals would allow us to obtain a frequency data for the data? a) 5 classes of width 8 with maximum value 70 b) 5 classes of width 8 with maximum value 67 c) 6 classes of width 7, with minimum value 25 d) 6 classes of width 7, with minimum value 20Make a Grouped Frequency Distribution Table for this data set.
- Find the range for the data items in the given frequency distribution.The inner diameters of washers produced by a company can be measured to the nearest thousandth of an inch. If the class marks of a frequency distribution of these diameters are given in inches by 0.587,0.602 0.617, 0.632, and 0.647, the class size is Blank 1Based on the frequency distribution above, is 19 a:
- An insurance investigator has observed that people with some astrological signs tend to be safer drivers than people with other signs. Using insurance records, the investigator classified 150 people according to their astrological signs and whether or not they were involved in a car accident during the previous 12 months. Do the following data indicate a significant relationship between sign and accidents? Test with a = .05. Libra Leo Gemini Accident 7 4 19 No Accident 73 46 11. Draw a scatterplot for these data and calculate the coefficients of determination.Construct a grouped frequency distribution for the data
- In one region it was found that 28% of people with incomes less than $50,000 use the Internet; 48% of those with incomes between $50,000 to $74,999 use the Internet; and 70% of those with incomes of at least $75,000 use the Internet. Use a pie chart or a bar chart to plot this data.A restaurant manager is planning a new layout for the tables in his store. He will be placing tables of 2, tables of 4, and tables of 6 throughout the dining room. To help him decide how many of each he needs, he decides to keep track of all table requests by customers during a 2-week period. Which measure of central tendency would BEST indicate the typical table size needed?Use the relative frequency table shown to the right to calculate the number of the 400 measurements falling into each of the measurement classes. Then graph a frequency histogram for these data.