1. Identify whether the variable in the information below is qualitative or quantitative. A nursecollects blood from kids and measure their blood-sugar content. This measure of blood-sugarconcentration is avariable.a. quantitativeb. qualitativec. qualitative as well as quantitatived. neither qualitative nor quantitative2. Identify the technique for gathering data in the study below.A pharmaceutical firm wantstest the effectiveness of a new drug. It wants to know if the newdrug is significantly stronger than the conventional drug. This is a/anstudy.a. observationalb. experimentalc. censusd. sampling3. You want to plot a frequency graph of daily rainfall, with rainfalls (inches) on the horizontalaxis. You will use aa. bar chartb. histogramc. cumulative frequencyd. best fit line4. Frequency of categorical data are displayed using aa. bar chartb. histogramc. time series graphd. best fit line

We have to choose the correct option1. Identify whether the variable in the information below is…

Answered: 1. Identify whether the variable in the…

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter6: Systems Of Equations And Inequalities

Section: Chapter Questions

Problem 17PS: Cholesterol Cholesterol in human blood is necessary, but too much can lead to health problems. There...

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Cholesterol Cholesterol in human blood is necessary, but too much can lead to health problems. There are three main types of cholesterol: HDL (high-density lipoproteins), LDL (low-density lipoproteins), and VLDL (very low-density lipoproteins). HDL is considered “good” cholesterol; LDL and VLDL are considered “bad” cholesterol. A standard fasting cholesterol blood test measures total cholesterol, HDL cholesterol, and triglycerides. These numbers are used to estimate LDL and VLDL, which are difficult to measure directly. Your doctor recommends that your combined LDL/VLDL cholesterol level be less than 130 milligrams per deciliter, your HDL cholesterol level be at least 60 milligrams per deciliter, and your total cholesterol level be no more than 200 milligrams per deciliter. (a) Write a system of linear inequalities for the recommended cholesterol levels. Let x represent the HDL cholesterol level, and let y represent the combined LDL VLDL cholesterol level. (b) Graph the system of inequalities from part (a). Label any vertices of the solution region. (c) Is the following set of cholesterol levels within the recommendations? Explain. LDL/VLDL: 120 milligrams per deciliter HDL: 90 milligrams per deciliter Total: 210 milligrams per deciliter (d) Give an example of cholesterol levels in which the LDL/VLDL cholesterol level is too high but the HDL cholesterol level is acceptable. (e) Another recommendation is that the ratio of total cholesterol to HDL cholesterol be less than 4 (that is, less than 4 to 1). Identify a point in the solution region from part (b) that meets this recommendation, and explain why it meets the recommendation.
Identify whether the following variables are qualitative or quantitative. If it is quantitative, determine if it is discrete or continuous. Age of college freshmen in Letran. Answer: ________________________________ The number of cars that arrive at a McDonald’s drive–through between 12:00PM and 1:00PM. Answer: ________________________________ The prevalent skin color of Filipinos is known. Answer: ________________________________ The freshmen college students came from either public or private schools. Answer: ________________________________ The boy’s weight is 120.5. Answer: ________________________________ For each of the following variables, determine the level of measurement. ___________ 1. Gender ___________ 2. Room Temperature ___________ 3. Percentile rank in NSAT ___________ 4. Weights of students in a first-year course ___________ 5. Results of a nationally administered test. Answer the following problem: The heights of Sydney, Ada, and Ria were 155cm, 158cm…
Which of the following is the best description of a multiple-baseline design? a. A study that takes several measures on nonequivalent groups before and after treatment. b. A study that takes baseline measures, then introducing the independent variable, and then retaking the baseline measures. c. A study that assesses the effects of introducing the treatment at different times over multiple subjects, behaviors, or situations. d. A study that reintroduces the independent variable after the second baseline measure.
The Commerce Department reported receiving the following applications for the MalcolmBaldrige National Quality Award: 23 from large manufacturing firms, 18 from large service firms, and 30 from small businesses.a. Is type of business a categorical or quantitative variable?b. What percentage of the applications came from small businesses? Figure 1.8 provides a bar chart showing the amount of federal spending for the years 2002to 2008 (USA Today, February 5, 2008).a. What is the variable of interest?b. Are the data categorical or quantitative?c. Are the data time series or cross-sectional?d. Comment on the trend in federal spending over time. The Food and Drug Administration (FDA) reported the number of new drugs approvedover an eight-year period (The Wall Street Journal, January 12, 2004). Figure 1.9 providesa bar chart summarizing the number of new drugs approved each year.a. Are the data categorical or quantitative?b. Are the data time series or cross-sectional?c. How many new drugs…
Is the number of games won by a major league baseball team in a season related to the team's batting average? Data from 14 teams were collected and the summary statistics yield:∑Y= 1,134, ∑X = 3.642, Σ(Y−Yhat)2 = 1011.06, ∑(X−Xbar)2 = .00118, and ∑(X−Xbar)(Y−Ybar) = 295.54Estimate σ.
Suppose researchers at an abdominal transplant clinic are concerned about the rate of graft loss due to diabetes status prior to receiving a donor kidney. Research has shown that gender discordance, or receiving a gender from a donor of an opposite gender may increase the risk of both exposure and outcome after transplant. Assume the following tables represent the stratified analysis of the potential confounding variable. (9 points) Gender Discordance Graft Failure No Graft Failure Total Diabetes II 23 10 33 No Diabetes II 4 44 48 Total 27 54 81 Gender Concordance Graft Failure No Graft Failure Total Diabetes II 9 34 43 No Diabetes II 12 87 99 Total 21 121 142 A) Calculate the stratum specific estimates for the odds ratios in each strata. B) Observe the difference in the odds ratios. Based on observation alone, what are we likely to conclude regarding the relationship between outcome and exposure…
Do single-parent families tend to be more impoverished than families with two parents? In order to test if there is a relationship between family structure and family income level, family researcher studied a sample of 35 one-parent and 65 two-parent families in a particular city to determine whether their total family income fell below the poverty level. _________________________Family Structure____________________________ Total family Income One Parent Two Parents TOTAL Below poverty level 24 20 44 Not Below Poverty Level 11 45 56 Total 35 65 100 What are the independent and dependent variables.? What is the null hypothesis? What test should we use?…

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