An experimenter is convinced that her measuring instrument had a variability measured by standard deviation o = 2. During an experiment, she recorded the measurements 4.1, 5.2, and 10.2. Do these data confirm or disprove her assertion? Test the appropriate hypothesis. Use 0.10 as level of significance.

Q: Explain the term variable and its different types.and research design ,population,sample size…

A: Variable: A variable is an attribute or the characteristic that can be measured. The value of the…

Q: Explain the intuition for why smaller samples are more likely to have extreme averages

A: Average is given as = sum of observation/number of observation Where number of observation is n (…

Q: (a) Describe the shape of the distribution.

A: Here given ,  Boxplot of literacy rate of countries of the world.

Q: Comparing Means from Different Populations?

A: Given that, Comparing Means from Different Populations: There are two means from two different…

Q: What is the definition of statistics? Why it is important to learn statistics? Give two major areas…

A: Statistics- Statistics is a subject as a branch of mathematics that is based on describing,…

Q: What is the difference between a descriptive and inferential statistics? When should you use each…

A: Descriptive and inferential statistics are two types of statistical analyses that are commonly used…

Q: What are the reasons why you should learn statistics? Do you think that learning statistics will…

A: There are few reasons you should learn statistics - 1. The first reason would be you effectively…

Q: What  statistical test( from the data)  should be used to check whether people choose each type of…

A: Chi-square goodness of fit test: The Chi-square goodness of fit test is used to test whether or not…

Q: Q Search this COL i The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores…

A: There are two independent samples which are college grads and high school grads. We have to test…

Q: TRUE or FALSE: Cross-tabulation is a display of data that compares the responses to two different…

A: Survey is a method of data collection.

Q: Please answer #13-17, Show all your work please thank you! In the first picture(first picture is…

A: Given Information: The graphical summary of the Age variable for the three treatment groups is…

Q: Briefly explain three principles you will consider necessary in planning an experiment

A: The three principles considered in planning an experiment are, Replication Randomization Local…

Q: Dr. Ferreira's research examines how intimate couples view their relationship. Dr. Ferreira asked…

A: Let x denotes the sample of males, y denotes the sample of females and d=x-y. The aim is to…

Q: The sample means target the value of the population mean.  true or false

A: Introduction: It is required to identify the statement as true or false.

Q: Inferentiial Statistics deals with O Population Only Qualitative data O Only Quantitative data O…

A: The option one is correct i.e. Population.

Q: need answer for the test statistics section. Please check the image for the data. Last question in…

A: First we will calculate mean for both data set :  N= 30 for both Profit from sales(X1)  Mx1 =…

Q: What is determining the worth of data? Evaluation Validity Results

A: What is determining the worth of data? Evaluation Validity Results

Q: You may need to use the appropriate appendix table or technology to answer this question. The mean…

A: Note: Hey there! Thank you for the question. As the question mentions the use of technology, we have…

Q: Consider the parameter(s) of interest in this study. • Label the appropriate parameter(s) of…

A: It was stated that  Klien et al (2011) conducted the following study to determine the effect of…

Q: What I Can Do WRITTEN TASK For this week, you are required to answer this assessment tool for…

A:

Q: Please aspa, with detail explanation

A: Experimental design This design gives how participants are allocated to different groups in an…

Q: Data Analysis question, please show all steps and where all calculation came from An evaluation of…

A: Given information: Sample size of group 1 is 899 and the sample size of group 2 is 721. That is,…

Q: Please give emphasis to ONLY steps 7 and 8! And please show tables in addition to showing your work?

A:

Q: What sorts of follow up questions about the statistics might you ask that person in order to obtain…

A: Statistics is a combination of applied mathematics which deals with data collection, organization…

Q: If you have data on your entire population, do you still need inferential statistics? why or why…

A: Inferential Statistics (IS) allows to make predictions.

Q: how do I find the test statistics and pvalue using excel or statcrunch? thank u

A: It is given that out of 308 orders, it is found that 37 are inaccurate. The sample proportion is…

Q: What is a easy way to learn the definitions in statistics.  For example  statistics sample…

A: It will be easy to learn the definitions in the following way:   Population: Population consists of…

Q: ▾ Part hn Paul teaches five sections of Introductory Psychology. He wants to know whether or not the…

A: In the given situation, There are 5 sections. Section 1 has 38 values, section 2 has 37 values,…

Q: hello I'm looking for my answer This project is to help you apply concepts to real world, real data…

A: Given information: Age Class Math 22 Junior 28 21 Senior 23 22 Senior 25 21 Sophomore 19…

Q: Using key terms, create a scenario where you can find a population, a sample, the parameter,…

A: Scenario: Consider a school consisting of students from class 1 to class 12. The researcher is…

Q: Here is a set of sample data. 53 90 93 99 55 64 65 73 75 76 84 87 88 Use your calculator to identify…

A: The given data set is:53,55,64,65,73,75,76,84,87,88,90,93,99The five-number summary, which is given…

Q: Mean, median and mode are descriptive statistics that we often use when answering scientific…

A: Mean (Arithmetic) The mean (or average) is the most popular and well-known measure of central…

Q: Why do we retain that a sample represents the underlying raw score population if the sample mean is…

A: We are asked one question regarding hypothesis testing. The question is "Why do we retain that a…

Q: The college of science at a particular university has 336 alum in a given year. Each of them are…

A: The random variable score follows normal distribution. We have to test whether the scores of these…

Q: Describe of two examples of data sets for each of the four levels of measurement. Justify your…

A:

Q: Is theory essential to the research process and statistics? Please Explain.

A: Introduction about Theory: Theory can be defined as the idea or concept that has no proof. It could…

Q: Part 1-Sampling the Fundraiser The fundraiser was a great success (thanks to your hard work), but…

A: The task is to analyze six different sampling strategies that can be used to survey attendees who…

Q: What is the goal of descriptive statistics and how do you think this goal is different from…

A: It is an important part of statistics . It is widely used in applications .

Q: The seniors in my math classes were asked about whether they would pay for either a senior trip or a…

A: The question is about categorical data analysis Given :   To test : A senior trip is more popular…

Q: Explain why the mean and the median are useful sample statistics (i.e. what does it tell us about…

A: The mean and median are important measurements for describing where a set of data is located.…

Q: • When might a small sample size be appropriate in a study? •When is a very large sample size…

A: When the sample size is ideal then a sample size can be appropriate in a study. The ideal sample…

Q: Setup: Identify the type of test you will perform, in detail, and explain WHY that particular test…

A: Here data is given for two categorical variables :  Healthy Patient We have to perform appropriate…