QuestionIn which of the following situations should the chi-square Test for Goodness-of-Fit be used?Select the correct answer below:A survey company puts out a survey asking people two questions. First, it asks if a person uses publictransportation or not. Second, it asks whether or not the person supports an upcoming environmentalprotection bill. The data are recorded in a contingency table. The company wants to determine if support forthe bill is independent of public transportation usage.A researcher is trying to determine if boys and girls spend a similar amount of time on homework. He surveys arandom sample of boys and girls in a school and records the distribution of time spent on homework for eachgender. He wants to determine if the distributions are the same.A referee wants to make sure the coin he uses for the opening coin toss is fair. He flips the coin 30 times andcompares the number of heads and tails with the numbers he would expect to get if the coin were fair.

The chi-square goodness of fit test can be used to compare the observed sample distribution with the…

Answered: Question In which of the following…

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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A congressperson wants to come up with a single value to describe the prices of homes in their district. However, their district consists of a few homes that are extremely expensive compared to the others. Which descriptive statistic should they use? a. Range b. Mode c. Median d. Mean
A vehicle quality survey asked new owners a variety of questions about their recently purchased automobile. One question asked for the owner's rating of the vehicle using categorical responses of average, outstanding, and exceptional. Another question asked for the owner's education levels with the categorical responses some high school, high school graduate, some college, and college graduate. The sample data below are for owners who had recently purchased an automobile. Quality Rating Average Outstanding Education Some HS 35 45 HS Grad 20 30 45 Some College 25 20 50 30 College Grad Exceptional With two different methods, test to see if the proportions of Average are same between Some HS and College Grad. You must state the hypotheses, test statistics, p-value, and conclusion, etc. 60 90 65
Suppose we wish to compare the health status of two groups of people. What variables might we use to measure the status? What variables might we want to control in order to draw the appropriate inferences and why?
Virginia polled a large sample of individuals to find the percentage of students with known food allergies and the percentage of students without known food allergies. Which of the following could sufficiently display the data if only the two given categories are to be included? Select the correct answer below: bar graph pie chart either a pie chart or a bar graph neither a pie chart nor a bar graph
A business reports that their average salary is over $91,000, the simple mean of the salaries listed in the chart. Alternatively, instead of a simple mean, the business could report the median, or the mode. Which would be the most useful to someone deciding whether to apply for an entry level job at this business? Job Number of Employees Salary Line workers 10 $30,000 Office manager 1 $45,000 CEO 1 $200,000 Select one: a. Simple mean is best b. Simple mean and median are nearly equal numerically. They are equally good for this purpose and better than the other options. O c. Simple mean and mode are equally good for this purpose and better than the other options. d. Median and mode are about equally good for this purpose and better than other options.
Using the following information: identify the population, sample, statistic, and parameter. Political pollsters are often interested in gaining information about the proportion of Americans who will vote for a candidate before the actual election. One group of pollsters conducted a survey of 50,000 people to find out if they planned on voting for Trump in the next presidential election.
Cloud seeding, a process in which chemicals such as silver iodide and frozen carbon dioxide are introduced by aircraft into clouds to promote rainfall was widely used in many years. Recent research has questioned its effectiveness. An experiment as performed by randomly assigning 52 clouds to be seeded or not. The amount of rain generated was then measured in acre-feet. The box plot of the data for the seeded and unseeded clouds are shown in the figure. Which statement best interprets the box plot. Boxplot of Seeded, Unseeded 3000 f 2500어 2000 - 1500 - 1000 - 500- Seeded Unseeded a. Cloud seeding is somewhat effective in promoting rainfall because of the greater mean b. Outliers for both seeded and unseeded data may prove data on the effectiveness of cloud seeding is insufficient c. Extreme outliers are evident in the seeded data and has greater variance O d. There's a greater mean and greater dispersion in the seeded data. Both plots show outliers Data
Need help with A.
Read the scenario below. Identify the population and sample. Then determine if the bolded value is a parameter or a statistic. Use the appropriate symbol in your answer. A 1993 survey conducted by the Richmond Times-Dispatch one week before Election Day asked voters which candidate for the state's attorney general they would vote for. 37% of the respondents said they would vote for the Democratic candidate. On Election Day, 41% actually voted for the Democratic candidate. The population is The sample is This is a scenario involving The symbol goes with 37% because 37% is a The symbol v goes with 41% because 41% is a
Can I get some help with identifying the variables and individuals?
A matched-pair case-control study was conducted in order to assess if there is a relationship between serum Vitamin D levels and migraine headaches. The results are shown below: Control Control With migraine No Migraine 22 49 (Case) High Vitamin D (Case) Low Vitamin D 36 18 What would be the total number of participants with migraine after we unmatched the pairs? Answer should be in numerical form. Avoid extra spaces before and after your answers. Answer should be a whole number; no decimal points.
Select the most appropriate answer. The estimation of the population average age of registered voters in the state of Ohio based on the sample average age of 1,000 registered voters in that state and its corresponding margin of error is an example of O descriptive statistics. O deductive statistics. O inferential statistics. O a statistic. a parameter.

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