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Mathematics Questions and Answers September 16, 2018

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How does a researcher determine p-value has shown a statistically significant relationship in educational research

Which of the following functions adds cell values together and divides the result by the number of values? O 1. MIN O 2. COUNT O 3. MAX 4. AVERAGE

Solve for x: (1/2)x = 16 Question 30 Select one: a. -4 b. -2 c. 2 d. 4 e. None of these

How to "Lie" with Data - Global Warming Name Goal: To understand how the way a graph is set up can influence the perception of the reader. Introduction: One of the most important skills that you can learn in a science class is how to interpret data. There are multiple ways that people can set up a graph to manipulate your thinking. Today you will

After UK, France, and Italy (all with populations between 60-68 million), the next most populous country in Europe is Spain at _____ million. Group of answer choices 53 58 39 44 47

Pick a specific dataset (NFL 2020-2021 season, MLB 2020, XFL 2020, NHL 2019-2020, MLS 2019) and derive unique insights using the data from the dataset

The following four questions follow this scenario. As mentioned before, assume an M/M/1 queue model with unlimited arrivals and FIFO queue discipline. Emily wants to open a coffee stand in her neighborhood and is wondering if it will be enough to have only one employee working at any given time. Emily's research on other coffee stands in the area

Any non - numerical assessment of data, such as how fresh the fish catch is (by smell of each fish), how clean a city's public restroom is, or how delicious the restaurants in a town

Americans aged 20-34 drive 15,098 miles each The mean math SAT score is 540 with standard deviation of 110, a normally distributed variable. What score would one need to get in order to be in the top 25% of SAT math scores? Answer:year on average. If the standard deviation of the mileage driven in a year is normally distributed with standard

Provide one strategy you could use when you are gathering data for analysis online using a search engine, and targeting a word, phrase, or string of words.

Representative Sample? You want to determine the average number of classes skipped by first-year students at a small college during a particular semester. State whether each of the following samples is likely to be representative and explain why or why not. Sample 1: 100 first-year students who belong to a sorority or fraternity Sample 2: 100

The bottom and red bolded path in the sketch illustrates P(# purchases = 0) = P(Customer 1 does not purchase AND Customer 2 does not purchase). The action of Customer 2 is independent of the action of Customer 2. Apply the rule selected in Q11 to the probabilities given in this question. Question 13 (Mandatory) (6 points) Assume the following NEW

analisis data adalah proses mengeksplorasi, membersihkan dan memodelkan data untuk menemukan informasi yang berguna, membuat kesimpulan dan mendukung pengambilan keputusan. Prosesnya sebagai berikut: a. Pengumpulan data Data dikumpulkan dari berbagai sumber. b. Pembersihan data Menghapus kesalahan lx

Suppose your course grade is based on four quizzes and one final exam. Each quiz counts as 15% of your final grade, and the final counts as 40%. Your quiz scores are 75, 80, 84, and 88, and your final exam score is 96. What is your overall score? Because the weights are percentages in the course grade example, we could think of the weights as 0.15

The authors assessed the short-term effectiveness of a Web-based alcohol education program on entering freshmen. Study participants were incoming first-year students at a midsized, rural, elite, private university in the Northeast. In June of 2006, all incoming first-year students were randomly assigned to either an intervention or control group.

Name: AP Statistics CED 6.1 Daily Video (Skill 1.A) Introducing Statistics - Why Be Normal? What Will We Learn? How do we identify evidence for a claim? How do we determine if the evidence for a claim is convincing? Does Green = More Natural? Many companies use the color green in the packaging of a product to suggest that it is healthier and more

Find the number of distinguishable arrangements of the letters of the word. QUINTILLION

A bicycle factory installs about 400 tires per day. Tires are installed Monday through Friday for 8 hours per day. The manager of the factory estimates the number of properly installed tires per week using the process below. In the first hour of work on Monday, 49 out of 50 tires were properly installed. So, there were about 8(49) = 392 properly

During a research project, a medical statistician finds that several expected frequencies in a contingency table are less than five. To handle the small sample size correctly, they should consider using: Pearson's correlation for relationship assessment Fisher's exact test when expected frequencies in a chi-square test are too low McNemar test for

In a study of 786786 randomly selected medical malpractice lawsuits, it was found that 473473 of them were dropped or dismissed. Use a 0.050.05 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed. Question content area bottom Part 1 Which of the following is the hypothesis test to be conducted?

Scatter plots play important role in prediction. Next step can be developing a model. Scatter plots provide information about relationships (linear or non-linear) between variables. The variables in scatter plot ________. Group of answer choices can be both numerical and categorical can be nominal must be ordinal must be numerical

Qu prueba estadstica consideras ms til, versatil y mas recomendada para la investigacin y evaluacin en consejera? cita referencias bibliograficas recientes

Hi, I recently received the same exam as the one in the document 1698703911-OVS-Grade 12 Data Management MDM4U - Dyck 3.pdf, and I'm having trouble uploading pictures but it's same as the document I attached above. Would it be possible to get access to the answers in that document for reference? I would really appreciate your help.

Use the Texas Data from class and do a similar analysis WITHOUT the first 4 years of data. How does the model fit based on the error measures used in class? Is there much improvement? Comment on the difference in the forecasts (for the next four periods) between the model developed in class and the model constructed here

Brendan Jackson EPI 5020 Confounding SPSS Exercise The calculated Crude Odds Ratio (OR crude ) when utilizing a 95% confidence interval of (lower) .375 and (upper) .718 is OR crude = 0.519. This means that the odds of regular physical activity in those who self-reported insomnia are 0.519 times that of those whom did not report insomnia 2. What is

What is one of the most significant drawbacks of graphic rating scales? Group of answer choices The scales must have at least ten questions to be statistically sound The scales are complicated to administer The scales typically do not weigh behaviors and traits according to their importance to the job

Construct the indicated confidence interval for the difference between the two population means. Suppose the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Two types of flares are tested and the burn times are recorded. Summary

Statistics: Assignment 7.10 Name: You should have 18 symbols below which are either squares, circles, or triangles. Some filled in (black) and others just outlines (white). If you can't see these, try updating your browser, opening this on another computer, or opening the pdf version instead of the docx version. Suppose that 18 cards are placed in

A statistic is Group of answer choices a dA Nominal scale uses Group of answer choices numbers with no meaningful zero. numbers with a meaningful zero. categories with no order. categories with order.escription of people in a population. a description of people in sample. the conclusion drawn from the population. the conclusion drawn from the

The ______ sets up the sampling distribution to which we compare a study's results

How likely do you feel it is that your sample proportion is within 2% of the true proportion of Hershey Kiss Face Up landings

Given the following accuracy rates for k-fold cross-validation with k = 4, which model will we choose to make predictions and what is the accuracy rate for that model? Observations in the Validation Set Model 1 Model 2 301-400 69.5% 72.2% 201-300 70.2% 68.9% 101-200 71.8% 71.5% 1-100 67.3% 69.4% Multiple Choice Model 1; 71.8% Model 2; 72.2% Model

For the living situation variable, what is the valid percentage of students who live on-campus?Living situation Frequency Percent Valid Percent Cumulative Percent Valid On-Campus Off-Campus with Parents or Family Off-Campus Other Total Missing System Total 139 24.0 25.0 25.0 186 32.1 33.5 58.5 231 39.8 41.5 100.0 556 95.9 100.0 24 4.1 580 100.0

The method for conducting a descriptive analysis comparing Texas and California involved several key steps such as Data Collection, Data sources, Statistical Analysis, Interpretation of Results, and Reporting. Overall, this methodical approach allowed for a through examination of HbA1c levels among diabetic Medicare enrollees, providing valuable

Qu prueba estadstica consideras es la mas recomendada, para la investigacin y evaluacin en consejera? a.Describe sus caracteristicas, ventajas y desventajas b.que sea una prueba estadistica que argumente efectividad, resultados positivos y este en la vanguardia cita referencias bibliograficas recientes y actuales

The porWhen comparing two indenpendent groups, the statistical analysis that should be chose to use is: a. ANOVA b. independent t-test c. dependent t-test d. correlation coefficienttion of a research report where the educational significance of the problem is presented is the a. introduction b. method c. hypotheses d. literature review

An Ishikawa diagram can: A. Display main groups of causes and subgroups of causes of a given result. B. Utilize a bar graph with causes displayed as bars of decreasing frequencies. C. Integrate multiple statistical analyses into a single display of causes and events. D. Avoid influence of human opinions and brainstorming in identifying root causes

The predicted value of y for each observation in the sample is called the residual. true or false

a small response to When graphing data from a large population, it is preferable to utilize relative frequencies and smooth curves rather than exact frequencies as in a small sample. This is mostly because it is practically impossible to obtain an exact count of each individual score in a huge population. For example, determining how many adults

Same subjects are used for the treatment. Question 39Select one: a. Ranking method b. Using subjects as their own controls c. Homogenous group d. Person-to-person matching

In one paragraph, interpret your findings on the effect of Martian height on Martian weight?Dependent Variable: Weight Number of Observations Read 12 Number of Observations Used 12 Analysis of Variance Source DF Sum of Squares Mean Square F Value Pr > F Model 1 47.83874 47.83874 73.28 |t| Intercept 1 -4.14335 1.75340 -2.36 0.0397 Height 1 0.38893

In the mean-standard deviation graph an indifference curve has a ________ slope. Group of answer choices negative zero positive northeast cannot be determined

The manufacturer of your favorite breakfast cereal is including free movie tickets in approximately 20% of its boxes of cereal. How would you conduct a simulation to determine approximately how many boxes of cereal you would have to buy to find a free movie ticket? Assign digits to represent getting free movie tickets. The other digits represent

the answer for 3 a should be 20s to 28s then 28s to 32s

A simple random sample of size nequals42 is obtained from a population with muequals61 and sigmaequals19. (b) Assuming the normal model can be used, determine P(x overbarless than64.3). (c) Assuming the normal model can be used, determine P(x overbargreater than or equals62.9)

A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 295 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related? Vaccination Status Diseased Not Diseased Total Vaccinated 66 106 172 Not Vaccinated 74 49 123 Total 140 155 295 Step 4 of 8:

The following are empirically based studies except from Question 79Select one: a. All of the above b. Scientific paper c. Thesis d. Dissertation

21 pts Use the following graph to identify the label on the horizontal (x) axis Graph of Favorite Type of Movies. People is on the vertical axis and Movie Genre is on the horizontal axis. There are 4 people who like comedy, 7 who like action, 6 who like romance, 1 who likes drama, and 4 who like scifi. Group of answer choices Drama Movie Genre

A group of individuals on a Trip were asked what was there highest academic achievement. The results are shown in the relative frequency table below. Fill out the table completely. Degree Frequency Relative Frequency Round 2 decimal places Percentage High School 2 0.05 5 Bachelors 7 Blank 1 Blank 2 MBA 20 Blank 3 Blank 4 Masters 3 Blank 5 Blank 6

In our week 5 materials, you have read and learned of various statistical methods and measures. What are some of the challenges you have had (or could foresee) in using data/statistics in real life? How were you able to overcome these challenges

I Need help solving this problem. Answer the following question. Did the June marketing campaign for Happiness products increase their sales from rates in May versus sale rates in July? A. paired sample t-test B. independent sample t-test C. two-way ANOVA D. Simple regression

What is the population mean CRP level in healthy adults? Why is the population mean not 2 (halfway between 0 and 4)

8. Sumber informasi manajer resiko dalam mengidentifikasi kerugian esposure yang terdahulu, antara lain ..... A. Data klaim yang dikeluarkan oleh Perusahaan asuransi. B. Data pengajuan klaim. C. Daftar pertanyaan analisis risiko. D. Bukti polis asuransi

Help me rewrite the following information in Laymen's term no more than 5 sentences maximum: Numerical Reasoning Computation Numbers; Comparisons Conversion of Units China is ready to DEVELOP these skills (201-210): Converts units of length between the customary and the metric systems Data Analysis China is ready to DEVELOP these skills (201-210):

The memory scores in this sample are approximately normally distributed. This conclusion is supported by both visual and statistical evidence. First, a visual inspection of the histogram with a superimposed normal curve revealed a relatively symmetrical shape, with most scores clustering around the mean and no extreme skewness or outliers. Second,

Seleccione el elemento que utiliza la redaccin preferida de APA: Option A En el estudio de Clooney (2008) de estudiantes de tercer grado de Kansas City, el 35% de los nios y el 68% de las nias pudieron completar las instrucciones de una tarea tediosa sin mostrar signos de agitacin. Option B Los nios de tercer grado son crnicamente disruptivos,

A normal population has mean 8 and standard deviation 6. (a) What proportion of the population is less than 20? (b) What is the probability that a randomly chosen value will be greater than 6? Round the answers to four decimal places

Using basic principles of mathematics and statistics, calculate and interpret the staffing data to include in your daily report. There are multiple ways to explain this data. Remember the primary goal of sharing this data is to quickly and easily inform your staff and leadership teams. You may create summaries for individual facilities, or for

Use Excel's PivotTable feature to construct a frequency distribution table for the "Grade" variable. Include the following columns in the PivotTable: Grade Ranges: Define appropriate grade ranges (bins) for grouping the data. (Refer to the instructions in the video below to determine the number of classes, class limits, and class width for the

As the price of a product in a retail store increases, the sales quantity of the product generally decreases. A new high-tech product from an online purchase site was tested by recording the monthly sales and the corresponding price of the product during that month. In the sample, the smallest and largest prices for the product were $49.99 and

measure of ---- are used to describe the variabillity and range of responses

Which of the following characterize an experimental research? Question 23Select one: a. Limited to small samples b. All of the Above c. They are usually numerical and caters statistical design which is sophisticated. d. The effects of independent variable on the dependent are measured

Project 1 Phase 2: Usability Tests - Status Report. Conduct a session with the device using your test created in Phase 1. Report on the results of the test

1. Study excerpt: Mensinger et al. (2022) described the psychological responses of nurses working in hospitals during the COVID-19 pandemic in the United States. "Participants were recruited using a snowballing strategy including outreach to alumni of the authors' university, news media, professional and trade organizations, social media, and

two percent of the parts produced by a machine are defective. Twenty parts are selected at random. What is the probability that exactly 3 parts will be defective

The __________ variable is hypothesized to cause variation in another variable, which is called the __________ variable. Multiple choice question Independent, dependent Dependent, independent Inferential, dependent Nominal, ordinal

Si una empresa mide el rendimiento con base en las ausencias de los trabajadores y accidentes, est utilizando el siguiente mtodo de evaluacin del desempeo: Pregunta 8Respuesta a. Datos personales relacionados con el trabajo b. Metodologa por Ranking c. Informe del rendimiento d. Valoracin conductual

A survey of statistics undergraduate at Prosperity university completed a survey that asked for their verbal and Math SAT scores. They wanted to predict the verbal score based on the math score. The value of R-Squared was 12.78%. The least squares regression equation is yhat=383.3 + 0.3489x. Find r

Use the given information to find the number of degrees of freedom, the critical values chi Subscript Upper L Superscript 22L and chi Subscript Upper R Superscript 22R, and the confidence interval estimate of sigma. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. White Blood

It is difficult to tell if people have energy because they exercise often or if they exercise often because they have energy. This is indicative of: Group of answer choices prediction problem issues constraints of repeated testing the time order relationship problem operational limitations in assessment significant issues with description

In a simulation exercise, regression model (1.1) applies with f30 = 100, f31 = 20, and a 2 = 25. An observation on Y will be made for X = 5. a. Can you state the exact probability that Y will fall between 195 and 205? Explain. b. If the normal error regression model (1.24) is applicable, can you now state the exact prob- Ii. ability that Y will

content area top Part 1 Determine the point estimate of the population mean and margin of error for the confidence interval. Lower bound is 18, upper bound is 24

The porWhen coSam read a recent publication and shared it with his class. One of the other students asked how many participants were in the study and Sam told her he wasn't quite sure because the article said that 900 surveys were sent out but never stated how many were returned. This is a weakness in the ______________ section of the report a.

Which statistical tests does the google sheets support that Microsoft Excel does not and under what conditions might they be needed?

Mean N Std. Deviation Std. Error Mean Pair 1 Older_Patient 10.2000 15 2.21037 .57071 Younger_Patient 11.4000 15 2.66726 .68868 Paired Samples Correlations N Correlation Significance One-Sided p Two-Sided p Pair 1 Older_Patient & Younger_Patient 15 .591 .010 .020 Paired Samples Test Paired Differences t df Significance Mean Std. Deviation Std.

Distributions that are leptokuric tend to have [ Select ] variability than platykurtic ones

Which of the following is NOT included in the ORM definition IAW OPNAVINST 3500.39(series)? (Encl 1 para) A. Increasing the probability of mission success B. A process that allows for the acceptance of risk regardless of the consequence C. A cyclical process D. A process that allows the development of informed decision making

u causa una excesiva planificacin en el aula que origina resultados negativos debido a que no se logran los objetivos acadmicos? Pregunta 5 Respuesta a. Rigidez. b. Dinamismo. c. Cautela. d. Flexibilidad

The ________ required that voters know how to read in order to cast a vote. Option A education test Option B schooling test Option C literacy test Option D understanding clause

Question 15 (1 point) Senior management of a consulting services firm is concerned about a growing decline in the firm's weekly number of billable hours. The firm expects each professional employee to spend at least 40 hours per week on work. In an effort to understand this problem better, management would like to estimate the standard deviation

Eighty percent of the light aircraft that disappear while in flight in a certain country are subsequently discovered. Of the aircraft that are discovered, 67% have an emergency locator, whereas 88% of the aircraft not discovered do not have such a locator. Suppose a light aircraft has disappeared. (Round your answers to three decimal places.) (a)

The correlation coefficient measures_________ a) the straight line of a relationship between two variables b) how two variables vary together c) the cause and effect of two variables d) the variation of the observed values e) None of the above

9. For her research project, Jerri interviewed ten people asking them the same open-ended questions. What type of research did Jerri engage in? Report an error Conclusive research Statistical research Qualitative research Quantitative research

Two kinds of plots are almost identical in structure, but only one of them reflects the relative group size of the primary variable. Which one? ______ Group of answer choices Standardized stacked bar plots Mosaic plots

Given N numbers: the rst number in the input is N, after that N integers are given. Count the number of zeros among the given integers and print it. You need to count the number of numbers that are equal to zero, not the number of zero digits

Hypothesis testing compares a "null hypothesis" (no effect) to an "alternative hypothesis" (an effect exists) and determines the likelihood of observing the data if the null hypothesis is true to determine if sample data supports a claim about a larger population. Hypothesis tests are used to test population claims or theories using sample data.

Practice Problems: The practice problems are arranged in order of increasing difficulty - the last several problems might present the most challenge. Students are expected to work out and submit the solutions to at least 5 problems! If you have previous experience in relational algebra, you can select the 5 most challenging problems though it is

In question 2, you ran some code to get statistics for the central air regression coefficient. What is the alternative hypothesis the p-value is testing

Existing knowledge should be leveraged to help __________. avoid duplicate efforts calibration measurements sampling

Refer to the table below. Of the 36 possible outcomes, determine the number for which the sum (for both dice) is 12. Die 1 1 2 3 4 5 6 Die 2 1 (1,1) (1,2) (1,3) (1,4) (1,5) (1,6) 2 (2,1) (2,2) (2,3) (2,4) (2,5) (2,6) 3 (3,1) (3,2) (3,3) (3,4) (3,5) (3,6) 4 (4,1) (4,2) (4,3) (4,4) (4,5) (4,6) 5 (5,1) (5,2) (5,3) (5,4) (5,5) (5,6) 6 (6,1) (6,2)

41021 35890 35484 35438 32462 31844 38177 39150 60332 31329 40993 40416 47155 22117 36048 33745 42113 36027 32316 29548 41817 33865 40969 35301 46185 32843 37242 33184 33823 34599 a) Since data were collected for 1 Correct quantitatve Correct variable(s), the correct graph to make is a histogram Correct . b) Using the formula class width = (maxX -

50 students have a mean IQ of 100.3 with standard deviation 5.95. We wish to estimate with 90% confidence the mean IQ of all students. We should use: Z Distribution T Distribution

Analysis of Variance (ANOVA) is designed to test differences in means between any two or more groups and only whether a difference exists (Holt, 2024). In the GCU Core Quantitative Designs document ex post facto design, comparative design, and any of the experimental designs could use ANOVA as a statistical test of the hypothesis (Grand Canyon

according to the following simple linear regression model with the accompanying data results. y = 0 + 1x, where n = 14, Xn i=1 yi = 632, Xn i=1 xi = 12,207, Xn i=1 x2i = 11,529,419 Xn i=1 xiyi = 598,098, and Xn i=1 y2 i = 31,128. Answer Questions 8-10. 8. Calculate the least squares estimate of the intercept and slop slope, i.e., 0 and 1

A survey was conducted that asked 1011 people how many books they had read in the past year. Results indicated that x overbarequals10.6 books and sequals16.6 books. Construct a 90% confidence interval for the mean number of books people read. Interpret the interval

Alcohol Concentration (percent) Number of drinks In one hour Body Weight (kg) 45 54 63 72 81 05 1 0,04 0.03 0.03 0.02 0.02 0.02 2 0.08 0.06 0.05 0.05 0.04 0.04 3 0.11 0,09 0.08 0.07 0.06 0.15 0.12 0,11 0.09 0.06 0.19 0.16 0.13 0.12 0.08 0.11 0.08 0,09 PREVIOUS Ful screen mode is in effect during your proctored testing. RECORDING FLAG Stimulus: 1

What is a binary variable? Option A A variable that can take on any value Option B A variable that can take on only positive values Option C A variable that can take on only two value Option D A variable that is not well-defined

Why would someone as an adult student be interested in taking Math 125 course

In this matching method, after looking for people with similar or the same on the variable, they are randomly assigned to groups. Question 56Select one: a. Matching groups b. Person-to-person matching c. Ranking method d. Homogenous group

In storytelling with data, according to the author, all of the data-based visuals she created for the book were made in which tool? O Excel O Power BI O Tableau O PowerPoint

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