Describe a business scenario where you would have to test more than two samples of data. What type of test would you use to test it? What hypotheses are you testing?

Q: .What percentage of females are smokers?  2.What percentage of people who do not smoke are males?…

A: Cross tabulation helps a researcher to analyze the results of bivariate relationship between the…

Q: At the 2% level of significance, what is the decision?

A: Given : n1=10 , n2=10 , s1=22.4 , s2=12.0 , α=0.02 Our aim is to find the decision. Here , we use…

Q: Compare the advantages and disadvantages of door to door personal interviews with mall intercept…

A: Advantages and disadvantages of door to door personal interviews: The door to door personal…

Q: What is the test Statistics? Of the problem in the picture

A: Given: p0=23=0.67x=25n=40p^=2540=0.625α=0.01

Q: Briefly explain why you should use the ANOVA rather than other tests we studied to determine if the…

A: If there is more than 2 conditions in an experiment a ANOVA is required. The fact the ANOVA can test…

Q: If you are analyzing statistical data from a range of percentages of participant responses and…

A: If you are analyzing statistical data from a range of percentages of participant responses and…

Q: highlight the KEY lessons of probability and statistics relevant to business decision making

A: Statistics is the branch of applied Mathematics in which we do collection, analysis, interpretation…

Q: What is the test statistics? From the problem in the picture

A: Given - n1=20, x1=8.2, s1=5.9n2=30, x2=5.6, s2=5.7

Q: How statistical tests are used?

A:

Q: No, less likely

A:

Q: Explain Testing a Single Mean for significance?

A: Z-test for significance of a single mean: The z-test is appropriate when population standard…

Q: Read the given scenario and pick the correct test procedure. Think about the type of data, how many…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer only first three…

Q: What type of test would you use to determine if happiness and health are related?

A: Test is that whether happiness and health are related.

Q: In this investigation, you learn how to decide if a value of x2 is statistically significant. How…

A: Here we have been provided with two samples falling into various categories. We will use Chi-Square…

Q: For each question, determine whether it is a statistical question. If it is a statistical question,…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Is the study an experiment or an observational study ? How do you know?

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

Q: What is the goal of statistics?

A: The main purpose of statistics is to understand the data deeply.

Q: What are application of statistics and math?

A: Statistics help in providing data as well as tools to analyze the data. Some powerful techniques are…

Q: What does a researcher attempt to do when constructing an "analysis story" to go with the results of…

A: A research study contains many aspects. First, area of interest on which research, needed to…

Q: What are the six steps to statistical testing? Explain Each step.

A: The six steps in hypothesis testing.

Q: You read a study about how opioid addiction can only be treated by addiction centers.  It was paid…

A: Yes I Think this study is valid because as we already know that opioid addiction can only be treated…

Q: What steps should you follow in collecting the data of your study?

A: Data collection: In this stage, the data was collected from various sources for analysis. Here, the…

Q: How do you conduct a comparative experiment ?

A: Introduction An experiment is a procedure which can be repeated infinitely and has a well-defined…

Q: Is the sample mean always the most frequently occurring value? If so, explain why. If not, give an…

A: No, Sample Mean is not the most frequent Occuring Value.   Mean= Sum of Observations / No.of…

Q: Does it make sense ? Why or why not? A pollster plans to improve survey results by only conducting…

A: A pollster plans to improve survey results by conducting polls in which the margin of error is zero.

Q: experiment?

A: Given Data: Percentage of babies recovered fully = 40% Total babies in the hospital = 7 Let the…

Q: Describe an experimental hypothesis and explain which post hoc test you would use if you find a…

A: Please go through the following explanation for Experimental hypotheses. Notice , when an experiment…

Q: What is the weakness of p value approach?

A: p-value is basically the probability that the null hypothesis is false. Interpretation: If p-value…

Q: What is the importance of collecting, organizing and presenting data? Minimum of 4 sentences.

A: From the given information we find the solution.

Q: How do you write a research questionnaire?

A: The objective is to write the steps in a research hypothesis.

Q: Which project has a lower absolute risk level? Which project has a lower relative risk level? Which…

A: Here absolute risk level measured by standard deviation and relative risk level measured by…

Q: What does hypothesis test indicates?

A: Hypothesis test: The process of making inference regarding the population based on the sample is…

Q: The higher the level of significance, the more prone to errors is the decision. True or false?

A: The higher the level of significance , make it easier to reject Ho. so higher of level of…

Q: What is the outcome and the conclusion of this test?

A: a) Option F t sampling distribution because the population is normal, and standard deviation is…

Q: How do you know which test/procedure to use given a particular research design or study? What…

A: There are various aspects which we have to analyse to decide which test procedure to use. Some of…

Q: How do I explain why this is a good outcome?

A: Multiple linear regression model: A multiple linear regression model is given as y = b0 + b1x1 +…

Q: What test would you use if you want to determine whether gender and major depend upon one another?…

A:

Q: How do I create a symmetrical data table? Like how do I know if it’s symmetrical?

A: If the data are symmetric, they have about the same shape on either side of the middle. In other…

Q: Explain the major difference between an experiment and an observation.

A: In an experiment, the researcher manipulates every aspect for deriving a conclusion. In…

Q: A researcher uses a repeated-measures design to compare individuals’ performance before treatment…

A:

Q: When do you use a one-tailed instead of a two-tailed test?

A: One tailed test: One tailed test is used if you only want to determine if there is a difference…

Q: Describe about the Why the Research Hypothesis Isn’t Tested Directly.

A: The null hypothesis is a neutral statement about a population parameter that is never proved or…

Q: A researcher wants to know if taking statistics improves critical thinking skills. She randomly…

A: Given that, A researcher wants to know if taking statistics improves critical thinking skills. She…

Q: What do you understand by the term "Pilot survey"?

A: A Pilot survey, usually on a small scale, carried out prior to the main survey, primarily to gain…

Q: When the number of data is lesser than 30, what test – statistic are we going to use? How about when…

A: Let, there are two sets of data. One has lesser than 30 and another has more than 30 data. The test…

Q: What kinds of statistical data play a role in an auto insurance firm’s decision on the annual…

A: Various statistical tools are used by auto insurance companies to find out the amount of premium…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.