Starting in 2004, a study to determine the number of lake sturgeon on Rainy River and Lake of the Woods on the United States-Canada border was conducted by the Canadian Ministry of Natural Resources, the Minnesota Department of Natural Resources, and the Rainy River First Nations. Using the capture-recapture method, the size of the population of lake sturgeon on Rainy River and Lake of the Woods was estimated at
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
Excursions in Modern Mathematics (9th Edition)
- Jedi Master Astaal Vibum is interested in studying the midi-clorian count in younglings and how those levels change as they become padawan and ultimately full Jedi knights. To begin the study, Astaal randomly selected 43 younglings and measured their midi-clorian counts. Measurements will be taken annually until they leave the Jedi order or reach the level of Jedi Master. What is the population of this study? Question 1 options: 1) All Jedi younglings 2) All Jedi knights 3) The 43 younglings measured 4) All childrenarrow_forwardA company studied the number of lost-time accidents occurring at its Brownsville, Texas, plant. Historical records show that 6% of the employees suffered lost-time accidents last year. Management believes that a special safety program will reduce such accidents to 4% during the current year. In addition, it estimates that 15% of employees who had lost-time accidents last year will experience a lost-time accident during the current year. a. What percentage of the employees will experience lost-time accidents in both years (to 2 decimals)? % b. What percentage of the employees will suffer at least one lost-time accident over the two-year period (to 2 decimals)? %arrow_forwardA company studied the number of lost-time accidents occurring at its Brownsville, Texas, plant. Historical records show that 9% of the employees suffered lost-time accidents last year. Management believes that a special safety program will reduce such accidents to 8% during the current year. In addition, it estimates that 15% of employees who had lost-time accidents last year will experience a lost-time accident during the current year. a. What percentage of the employees will experience lost-time accident in both years (to 1 decimal)? b. What percentage of the employees will suffer at least one lost-time accident over the two-year period (to 1 decimal)? %arrow_forward
- A company studied the number of lost-time accidents occurring at its Brownsville, Texas, plant. Historical records show that 6% of the employees suffered lost- time accidents last year. Management believes that a special safety program will reduce such accidents to 3% during the current year. In addition, it estimates that 15% of employees who had lost-time accidents last year will experience a lost-time accident during the current year. a. What percentage of the employees will experience lost-time accidents in both years (to 2 decimals)? b. What percentage of the employees will suffer at least one lost-time accident over the two-year period (to 2 decimals)? %arrow_forwardThe director of a large public library must schedule employees to reshelf books and periodicals checked out of the library. The number of items checked out will determine the labor requirements. The following data reflect the number of items checked out of the library for the past three years: Month Year 1 Year 2 Year 3 January February March April May 1,733 2,676 2,417 2.432 2 421 2,053 2,321 2,359 2,088 2 692 2,132 2,564 2,677 2,150 2,243 2,692 2,421 2,378 2,239 2,445 June 2,122 2,206 July August September October 1,869 2,506 2,291 2,378 2,189 2,663 2,039 1,678 1,699 2,065 2,113 2,404 1,903 1,922 November 2,399 2,274 December The director needs a time-series method for forecasting the number of items to be checked out during the next month. Suppose that the director considers the best forecast to be the one that minimizes the absolute value of mean bias (E). Find the best simple moving average forecast you can using the director's criteria. Using the director's criteria, the best…arrow_forwardDefine the term scatterplot?arrow_forward
- 4) Annual expenditures for prescription drugs was $838 per person in the Northeast part of the country. sample of 60 individuals in the Midwest was taken and showed a per person annual expenditure for prescription drugs of $745. Does the sample data support the conclusion that the population annual expenditure for prescription drugs per person is lower in the Midwest than the Northeast.arrow_forwardA common belief among doctors, nurses and other medical professionals is that lunar cycle influences human behavior, such as the quality of sleep. In a recent study, a scientist was interested in investigating whether there is a significant difference in the number of sleeping hours in different moon phases: waxing crescent, full moon, and waning crescent. Participants’ number hour of sleep were recorded in the table below. Quality of sleeps (in number of hours) Waxing Crescent Full Moon Waning Crescent 7 8 9 7 8 4 5 4 3 6 5 7 8 9 6 What is being measured? That is, what is the DV? What is the level of measurement of the DV? With α = .05, determine whether there are any significant mean differences among your groups.arrow_forwardAt a university,a professor is interested in whether the size of tableware influences how much College Students eat.He randomly assigns 100 college students to one of two groups:the first is served a meal using normal-sized table ware, while the second is served the same meal,but using tableware that is 20percent smaller than normal.He records how much food is consumed by each group.Identify the 1.Population 2.Sample 3.Experimental units 4.Explanatory variable 5.Treatment 6.Response variablearrow_forward
- A company wants to study the effects a new drug has on alleviating pain. Some patients at doctor’s office are selected to be in the study. The patients will be randomly assigned to take the new drug or the old drug. They will be monitored to see when the pain goes away. What is the population? A. Patients B. Which Drug C. Control Group D. How long it takes the pain to go awayarrow_forwardRocky Mountain National Park is a popular park for outdoor recreation activities in Colorado. According to U.S. National Park Service statistics, 46.7% of visitors to Rocky Mountain National Park in 2018 entered through the Beaver Meadows park entrance, 24.3% of visitors entered through the Fall River park entrance, 6.3% of visitors entered through the Grand Lake park entrance, and 22.7% of visitors had no recorded point of entry to the park.†Source: U.S. National Park Service website Consider a random sample of 175 Rocky Mountain National Park visitors. Use the normal approximation of the binomial distribution to answer the following questions. (Round your answers to four decimal places.) (a) What is the probability that fewer than 8 visitors had a recorded entry through the Grand Lake park entrance? (b) What is the probability that more than 40 visitors have no recorded point of entry?arrow_forwardIn the 2014-2015 academic year, many public universities in the United States raised tuition and fees due to a decrease in state subsidies. The change in the cost of tuition, a shared dormitory room, and the most popular meal plan from the 2014- 2015 academic year for a sample of 10 public universities were as follows: $1589, $593, $1223, $869, $423, $1720, $708, $1425, $922 and $308. Run the descriptive statistic measures for this data set and interpret the results for the following concepts:arrow_forward
- Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL