Size Cumulative weight (%) 1 2 2 14 5 50 10 80 15 92 40 99.5 60 99.9 Determine if this distribution is log normal. If so please provide the reasons
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| Size | Cumulative weight (%) |
| 1 | 2 |
| 2 | 14 |
| 5 | 50 |
| 10 | 80 |
| 15 | 92 |
| 40 | 99.5 |
| 60 | 99.9 |
Determine if this distribution is log normal. If so please provide the reasons
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- Please fill in the blanksTerri Vogel, an amateur motorcycle racer, averages 129.23 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.28 seconds. The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: log book of Terri Vogel) Let X be the number of seconds for a randomly selected lap. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X NO b. Find the proportion of her laps that are completed between 127.32 and 128.45 seconds. c. The fastest 4% of laps are under d. The middle 50% of her laps are from seconds. seconds to seconds.How was the cumulative percent column here computed? Please show how these numbers would be correct, if they are correct. I'm not quite sure how to calculate that last column, and what those numbers mean or how we got them. Thank you for your help. X F P % Cumulative % 200-210 9 0.2813 28.13 28.13 210-220 7 0.2188 21.88 50.00 220-230 6 0.1875 18.75 68.75 230-240 4 0.1250 12.50 81.25 240-250 4 0.1250 12.50 93.75 250-260 2 0.0625 6.25 100.00
- How do you parts c and d?Terri Vogel, an amateur motorcycle racer, averages 129 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.26 seconds . The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: log book of Terri Vogel) Let X be the number of seconds for a randomly selected lap. Round all answers to 4 decimal places where possible. question: The middle 50% of her laps are from _____ seconds to _______ seconds.Please answer question 20 letters d,e,f
- Adobe PDF Signatures Paragraph Styles Editing Adobe Acrobat Voi 11. A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of time they last is approximately normal. Researchers in a hospital used the drug on a random sample of 9 patients. The effective period of the tranquilizer for each patient (in hours) was as follows: 2.6; 2.8; 3.0; 2.3; 2.3; 2.2; 2.8; 2.1; and 2.4. Construct a 95% confidence interval for the population mean length of time. (i) State the confidence interval (Round your answer to two decimal places.) (ii) Calculate the error bound. (Round your answer to two decimal places.)Terri Vogel, an amateur motorcycle racer, averages 129.45 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.29 seconds . The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: log book of Terri Vogel) Let X be the number of seconds for a randomly selected lap. Round all answers to 4 decimal places where possible.a. What is the distribution of X? X ~ N()b. Find the proportion of her laps that are completed between 130.57 and 132.63 seconds. c. The fastest 3% of laps are under seconds.d. The middle 50% of her laps are from seconds to seconds.Don't know how to solve
- Study Hours Frequency 10 9 20 8 20 7 25 20 10 Above is a frequency distribution of the number of hours students studied for a test. What is the cumulative frequency for students who studied for 7 hours or less? O a. 25 b. 40 O c. 45 O d. 55Ap StatsTerri Vogel, an amateur motorcycle racer, averages 129.52 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.28 seconds . The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: log book of Terri Vogel) Let X be the number of seconds for a randomly selected lap. Round all answers to 4 decimal places where possible.a. What is the distribution of X? X ~ N(,)b. Find the proportion of her laps that are completed between 128.63 and 129.99 seconds.c. The fastest 3% of laps are under seconds.d. The middle 80% of her laps are from seconds to seconds.
