Five students taking a Business Statistics module at MANCOSA were asked to provide an example of avariable they have encountered in their day-to-day life. Their responses are as follows:StudentLunganiNsikaThembekileMduduziVariableThe body temperature of a patient diagnosed with COVID-19The price of a technology company stock on the NASDAQThe age of his bull mastiffThe number of female students in Mduduzi's Python classWhich student's provided a continuous true zero variable?A. LunganiB. Lungani and NsikaC. NsikaD. Thembekile and Mduduzi

The variable which is considered to assume an infinite no of quantitative values between any two…

Answered: Five students taking a Business…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Mr. Friend noticed that meetings tended to start late when there were a lot of people in attendance and decided to study that relationship. He collecting data on the number of people who were attending each meeting and the number of minutes late that the meeting started. He noticed there was one point that seemed unusual, so he removed it from the data set. What is true about the point that was removed? a. the point is not unusualb. It is an influential observationc. It has the largest residuald. The slope changes little when the point is removedSelected:e. The correlation is lower with the removal of the point
The key measure of disease occurrence for assessing risk of a disease: Question 13 options: is primarily incidence data. is primarily prevalence data. could equally be both incidence and prevalence data. is neither incidence data nor prevalence data.
You need to use Stata to look up the dataset and its variables. Use Stata Companion Textbook. (Dataset: NES. Variables: spend8, [pw=nesw].) The NES dataset contains spend8, which records the number of government policy areas where respondents think spending should be increased. Scores range from 0 (the respondent does not want to increase spending on any of the policies) to 8 (the respondent wants to increase spending on all eight policies). The NES, of course, polls a random sample of U.S. adults. In this exercise you will analyze spend8 using the mean and lincom commands. You then will draw inferences about the population mean. (Remember to specify nesw as the probability weight.) The spend8 variable has a sample mean of ______. Make sure you use [pw=nesw] so your results are nationally representative. There is a probability of .95 that spend8’s true population mean falls between a score of ______ at the low end and a score of ______ at the high end. A student researcher…
Consider the following scenario and answer the questions below: The ornithologist decided to investigate the effect of temperature on the migration of North American birds. Develop a hypothesis in the appropriate format. Identify the independent variable. Identify the dependent variable. Plan an investigation (what would she do to collect data?). Did she engage in basic science or applied science? Explain. Did she engage in inductive or deductive reasoning? Explain
Suppose you were to collect data for the following pair of variables, ski diving: depth, visibility. You want to make a scatterplot. Which variable would you use as the explanatory variable? depth visibility Which variable would you use as the response variable? O depth O visibility Would you expect to see a positive or negative association? positive negative O neither
In a study of the effects of the drug THC on driving performance, driving performance would be the Independent variable. a. true b. false
I need help with 7, 8 and 9
What is a confounding variable in research, and how can it affect the results of a study? Provide an example of a confounding variable in a hypothetical study.
Which of the following variables is not a qualitative or categorical variable? Species: Warbler, Wren, Owl, etc. Moth Type: 1 = Peppered, 2 = Melanic Moth Type: 1 = Peppered, 2 = Melanic Age at Death: 0-116
fill blanks underlines.
Which type of observational study is described in the problem statement?
Provide an appropriate response. Suppose you were to collect data for the pair of given variables in order to make a scatterplot. For the variables time spent on homework and exam grade, which is more naturally the response variable and which is the explanatory variable? O Time spent on homework: response variable Exam grade: explanatory variable O Time spent on homework: explanatory variable Exam grade: response variable

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