Size Cumlative weight (%) 2 2 3 10 5 40 7 70 10 92 25 99.9 Determine if this distribution is log normal.
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| Size | Cumlative weight (%) |
| 2 | 2 |
| 3 | 10 |
| 5 | 40 |
| 7 | 70 |
| 10 | 92 |
| 25 | 99.9 |
Determine if this distribution is log normal.
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- What type (s) of translation(s), if any, affect the range of a logarithmic function?The fox population in a certain region has an annualgrowth rate of 9 per year. In the year 2012, therewere 23,900 fox counted in the area. What is the foxpopulation predicted to be in the year 2020 ?What type (s) of translation (s), if any, affect thedomain ofa logarithmic function?
- Table 6 shows the population, in thousands, of harbor seals in the Wadden Sea over the years 1997 to 2012. a. Let x represent time in years starting with x=0 for the year 1997. Let y represent the number of seals in thousands. Use logistic regression to fit a model to these data. b. Use the model to predict the seal population for the year 2020. c. To the nearest whole number, what is the limiting value of this model?The lifetime (in days) of a certain electronic component that operates in a high-temperature environment is lognormally distributed with μ = 1.9 and σ = 0.4. Find the mean lifetime. Round the answer to three decimal places. daysTerri Vogel, an amateur motorcycle racer, averages 129.09 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.25 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. b. Find the proportion of her laps that are completed between 125.17 and 126.26 seconds. c. The fastest 4% of laps are under seconds. d. The middle 60% of her laps are from seconds to seconds.
- Terri Vogel, an amateur motorcycle racer, averages 129.44 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.3 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.Find the proportion of her laps that are completed between 131.31 and 133.72 seconds. The fastest 4% of laps are under seconds. The middle 50% of her laps are from seconds to seconds.Terri Vogel, an amateur motorcycle racer, averages 129.09 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.25 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. b. Find the proportion of her laps that are completed between 125.17 and 126.26 seconds.Terri Vogel, an amateur motorcycle racer, averages 129.42 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. b. Find the proportion of her laps that are completed between 131.37 and 133.62 seconds. ? c. The fastest 3% of laps are under ? seconds. d. The middle 40% of her laps are from ? seconds to ? second
