Since the number of samples is less than 30, shouldn't t-test be used instead

Q: In a study, researchers wanted to measure the effect of alcohol on the lippocampal region, the…

A: We have given that  Sample size n = 11 Sample mean = 8.17 Standard deviation = 0.8

Q: How does Turkey’s HSD test for multiple comparisons can be used?

A:

Q: Can you give an example of how the importance of the goodness of fit test to the chi-square test?

A: Step 1: The goodness of fit test to the chi-square test is a statistical hypothesis, which helps to…

Q: How would you report those results in APA style?

A: The question is about to compare the difference between number of anagrams solvable and number of…

Q: Suppose you wish to determine the proportion of college students in NC who receive some form of…

A: Givenconfidence level=95%Margin of error(E)=0.04sample proportion(p^)=0.78

Q: DURING an experimetn in school , Geirge conducts an experiment  in which he measures an item/object…

A: During the experiment Geirge uses a string and ruler. He is likely to commit measurement error…

Q: How can we know that the sample size of A is less than B? The sample size of both is not stated in…

A: Here we have to explain How can we know that the sample size of A is less than B

Q: f we wish to test the difference between three means what is the alternative hypothesis?

A: Given that  Define the appropriate null and alternate hypotheses.   H1: μ1 = μ2 = μ3 vs Ho: At…

Q: If the standardized mortality ratio from a textile worker industry were 4.0 or 400% and the…

A:

Q: You learned about 3 types of t-tests. What are they? and briefly describe the types of research…

A: Introduction - T-score - The t-score is a ratio between the difference between two groups and the…

Q: 2.24 Exit poll: Edison Research gathered exit poll results from several sources for the Wisconsin…

A:

Q: If a significant difference is found between 2 variables does it result necessarily in a clinically…

A: Statistical significance is the likelihood that the relationship between variables is caused by…

Q: Explain the assumptions for testing the difference between two means?

A: Suppose nx random observations, X1, X2, …, Xm are taken from the first population and ny random…

Q: What is the difference in what a small P-value tells us compared to a high P-value?

A: P Value is a method to determine the significance of the result from a data. It basically tells you…

Q: An educational psychologist is testing the new reading technique. According to her hypothesis,…

A: Given, An educational psychologist is testing the new reading technique. According to her…

Q: How to Evaluation of the p -Value Approach?

A: Concept of p-value: The p-value in hypothesis testing is the probability of obtaining a test…

Q: Can you please show all your work to solve the problem? I need to be able to do it by myself. Thank…

A: Given : Sample size of female students (n1) = 50 Sample size of male students (n2) = 60 Let X1 : No.…

Q: What does ∆2xk equal?

A:

Q: A software company is interested in improving customer satisfaction rate from the 65% currently…

A: Given,population proportion(P)=0.65sample size(n)=207no.of customers who were satisfied(x)=145

Q: What is the best point estimate for average number of credit hours per semester for all students at…

A: Given : At the local college a study found that students earn an average of 14.3 credit hours per…

Q: In a large clinical trial, 400,674 children were randomly assigned to two groups. The treatment…

A: Given that, The values of p1^ and q1^ is,

Q: true proportion of voters in favor of a referendum is unknown period a random sample of 200 voters…

A: Formula : Point estimate = p̂= x/n

Q: A study is testing the effectiveness of a new allergy medication. Sixty people who reported they…

A: Given: Number of people who have reported allergies = 60

Q: A survey of 1024 people found 580 of them eat chicken soup when they have a cold or flu and…

A: The given question can be solved as shown in step2.

Q: Explain about why z Test Is Appropriate.

A: The z test is basically a statistical test for testing whether is there any difference between…

Q: What is the decision rule for the t-test that the mean child mortality rate for countries in Eastern…

A: It is tested that the mean child mortality rate for countries in Eastern Europe is more than the…

Q: A company that sponsors LSAT prep courses would like to be able to claim that their courses improve…

A: a)Suppose μd is the population mean difference between post and initial test scores.

Q: Male penguins that weigh more than 4710 grams are considered "desirable" because the extra fat means…

A: We need to find expected value of desirable penguins Let us find out probability of a desirable…

Q: please answer all parts

A: Step1:  Name of inference procedure: Two-sample z-test for proportionsRandom? Yes, the patients were…

Q: Let n1 = 100, x1= 50, n2=100 and X2= 30 a) At the 0.05 level of significance, is there evidence of a…

A: From the provided information, n1=100x1=50n2=100x2=30

Q: How to draw a boxplot with the same quartile 2 and quartile 3?

A: Boxplot is a graphical representation that indicates the five-number summary of data. The…

Q: Which multiple comparison test provide better protection against misses or type II errors? Describe…

A: Here's the explanation is as follows; The multiple comparisons,  occurs when one considers a set of…

Q: more than 50% Australians would download COVIDSafe app? Check the condition and test at 5% level.

A:

Q: SAT or ACT? Each year thousands of high schoolstudents take either the SAT or the ACT,…

A:

Q: An FDA inspector knows that the average amount of fecal matter particulate on a restaurant's kitchen…

A: From the provided information, Sample size (n) = 7 Sample mean (x̅) and sample standard deviation…

Q: You are working on a political campaign and you want to take a sample to determine your candidate’s…

A: From the given information , determine the sample size using margin of error with 95% of confidence…

Q: A researcher has a limited amount of time and money, so they want to choose the research design that…

A: Correct option is (A) The related samples t-test  It is also known as Dependent t test and paired t…