Explain the major difference between an experiment and an observation.

Q: c) Find the test statistic, round answer to 1 decimal place. x² = d) What is the p-value? Round…

A: Given: Observed frequency   yes no total treatment 16 50 66 control 9 94 103 total 25 144…

Q: how are parameters and statistics related?

A: Parameter: The parameter is used to explain the entire population. For example, a teacher calculated…

Q: Comparing Means from Different Populations?

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

Q: Discuss the similarities and differences between observational studies, surveys, and experiments.…

A: Survey are simplest form of collecting information for randomly selected peoples.For example 20…

Q: Explain why two samples from the same population could differ.  Why do we say that two samples test…

A: The objective of the question is to understand why two samples from the same population could differ…

Q: How was relative risk calculated? Make a 2 by 2 table to display the data.

A: From the data given ,   Nonwhite Uranium expected deaths = 10 Nonwhite Uranium found death…

Q: State two advantages of using a sample statistic rather than a parameter.

A: The numerical value that describes the characteristics of a population as a whole is defined as the…

Q: part 2 of the second question. How do i determine the quartile.

A: Data : 184, 98, 101, 126, 150, 166, 82, 136, 124, 118, 133, 83, 86, 101, 105, 97, 88, 131, 128,…

Q: Can one "trust"

A: Statistics is the study of collecting , analyzing and interpretation of the data.

Q: I would like to check my answer please for the ones I underline. Dr. Banner wants to conduct a study…

A: The given study can be dealt using a descriptive research method since the researcher is focused on…

Q: DO STYROFOAM CUPS HOLD HOT OR COLD LIQUIDS BETTER? WHAT WILL BE YOUR CONTROL GROUP ? WHAT WILL BE…

A: The researcher wants to conduct an experiment to test if Styrofoam cups hold hot or cold liquids…

Q: When we are comparing two sample means that are not the same group of individuals, what kind of test…

A: Given that  When we are comparing two sample means that are not the same group of individuals

Q: What do you mean by Random Sample?

A:

Q: What is meant by the process of statistics

A: Process of statistics: It involves the following steps.

Q: Does the one observed sample mean qualify as a common or a rare outcome? Explain.

A: Sample mean qualify as a common outcome if the difference between the sample mean and the actual or…

Q: This was a question on my homework and I would like to know if I answered it correctly. Thank you…

A: Odds (O):The “odds” of the occurrence of an event is the ratio of the number of occurrences of the…

Q: Why do we want to avoid bias when collecting data?

A: Bias : It is any trend or deviation from the truth in data collection, data analysis, interpretation…

Q: what are the real-life implications of statistics in businesses? give 3 examples

A: The statistics used in all the departments of business activity like sales, purchase, production,…

Q: A researcher conducts an independent-measures study examining how the brain chemical serotonin is…

A: A. Null and alternate hypotheses: The investigator is specifically interested to test whether the…

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: Your math teacher Ms. Washington notices that students with calculators do better on her math tests…

A: Solution Causation and correlation are different and causation  do not provide correlation.

Q: In 1998, there was a major ice storm in Maine. Researchers wanted to know whether there was an…

A: Answer:-  1) It is a  contingency table. 2)Here, we can perform Chi-square independence test and…

Q: b) Fill in the expected values, round answers to at least 2 decimal places. Expected Pain Free: Yes…

A: (b)

Q: You are hired to study the statistical relationship between the number of trees and the number of…

A: From the above given data the following solution is provided below

Q: Come up with a real-life situation in which you might be curious to know if there is a difference…

A: Null and alternative hypothesis : The null hypothesis could be a claim that's oftentimes created…

Q: What are the requirements for an experiment to be able to show that changes in one variable cause…

A: To Determine :-  The requirements for an experiment to be able to show that changes in one variable…

Q: A social psychologist wants to know if people judge a person's attractiveness differently if they…

A: Correct Option: C. independent samples t-test

Q: Read through this scenario and look at the data that was collected.  State the null and all possible…

A: Provided ANOVA result with replication

Q: analyze her data

A: ANOVA:  This is a Statistical technique to check the variation in the data. We are checking the…

Q: Discuss the differences between a designed experiment and an observational study.

A: Experimental study is used to measure the effects of certain treatments on a particular sample.…

Q: What is the point of statistics? Why do we need it? Why can’t we just look at data by itself?

A: Introduction - Statistics - Statistics is a branch of mathematics which include collection,…

Q: why is it  important for students to know something about statistics as applied to psychology?

A: Yes it is important for students to know something about statistics as applied to psychology…

Q: A researcher is testing the effect of one independent variable using three treatment conditions. She…

A: Given that, A researching is testing the effect of one independent variable using three treatment…

Q: when you have means from two different samples, it is best to conduct a what test?

A: When there is mean from two different samples, two types of test can be conduced:

Q: What was the power for this study?

A: We need to know the effect size, sample size, significance level, and alternative hypothesis in…