Researchers were interested in examining the impact poverty may have on self-perceptions of health. Participants were asked to rate their health as in good or poor. Their income level was categorized as above or below the poverty line. Identify the null and alternate hypothesis.

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: When looking to understand the Z score what does it actually mean in simple terms in comparison to…

A: The value of the z-score tells you how many standard deviations you are away from the mean. If a…

Q: What is a Null Hypothesis? What does the word “null” mean? How does the Null Hypothesis differ from…

A: We have to define null hypothesis.

Q: What is the purpose of writing down and testing the null hypothesis?

A: Hypothesis is performed to test that whether the thing we believe in actually right or not.

Q: Researchers at the University of Boston's Children's Hospital and Harvard Medical School analyzed…

A: a null hypothesis of H0: no cancer is present and an alternative hypothesis of Ha: cancer is…

Q: State the general steps of the P-value approach to hypothesis testing.

A:

Q: A non-significant outcome means that the data do not conclusively demonstrate that the null…

A: The probability value is the probability of a result as extreme or more extreme given that the null…

Q: Come up with your own hypothesis testing scenario. What is an example of a null and research…

A: Suppose it is claimed that the average weekly salary of a waiter at restaurant in USA is $800 with…

Q: For a repeated measures study, if the null hypothesis is true, then what value should be obtained…

A: According to the provided information, the null hypothesis is true

Q: Be able to determine the null hypothesis from a description of an experiment?

A: Hypothesis: Hypothesis is an assumption about the parameter of the population which will be made on…

Q: In a research report, the term "significant" is used when the null hypothesis is rejected Select…

A: We know that when we said that a test is significant, we always reject the Null Hypothesis  This…

Q: Which is the null hypothesis? * There is a significant relationship between a person's age and their…

A: We have given that the data of two populations one of person’s age and other one is time spent for…

Q: Researchers are trying to determine if the prevalence of CVD is different in smokers compared to…

A: Here compare provenance of CVD BETWEEN non smoker and smokers

Q: Do sports drinks help prevent cramps in endurance sports? At the end of a marathon, officials will…

A: Observational study: In observational study, the individuals of the study are observed by the…

Q: Explain why the null hypothesis should not be accepted when the effect is not significant?

A:

Q: Discuss how the concept of statistical independence underlies statistical hypothesis testing in…

A: In order to test whether the two categorical variables are independent from each other or not, the…

Q: What does rejecting the null hypothesis and statistically significant both signify?

A: The key assumption of a hypotheses test is that the null hypothesis is true. The aim of the…

Q: In most experiments, researchers would prefer to fail to reject the null hypothesis.  Is this…

A: In the statistical hypothesis, the test statistic value lies either in the rejection region or in…

Q: What's the null hypothesis?

A: Test is that whether that treatment has in increasing effect on the mean.

Q: Starting with work life what is a description of scenarios where hypothesis testing may be…

A: Hypothesis testing:         Hypothesis testing was introduced by R.A.Fisher (Ronald Fisher).It is a…

Q: Why do we need to use Hypothesis testing??

A: Hypothesis testing is a statistical procedure that use the sample data to make conclusions about the…

Q: Match the Null Hypothesis to the mathmatical description:

A: Test is that whether the mean length of unemployment differs among the residents of two local…

Q: Interpret, in words, what it means for a research question that a null hypothesis was accepted.

A:

Q: Describe the relationship between the null and alternate hypothesis?

A: Hypothesis: Hypothesis is an assumption about the parameter of the population which will be made on…

Q: The term error is used in two different ways in hypothesis testing: a Type I error (or Type II) and…

A: A) Standard error can be decreased by increasing the sample size. Changes in sample size have no…

Q: What is step 5 of hypothesis testing ?

A: Step 1: Specify the Null hypothesis and Alternative hypothesis. In this step, will describe the…

Q: the non-directional null hypothesis? What is the alternative hypothesis?

A: Hypothesis in statistics are the statements which need to be tested on the basis of the observed…

Q: What would it mean to a hypothesis test if we increased or decreased the p-value? Why might someone…

A:

Q: Which of the equations below is the proper way to calculate the test statistic for the above…

A: here given  x¯D = 2.33sD = 2.88 n = 6

Q: Which plot indicates the null hypothesis of no difference would not be rejected?

A: Objective: To identify the plot that indicates the null hypothesis of no difference would not be…

Q: the null hypothesis as a result of the statistical testing, when in fact the null hypothesis is

A: Type 1  error is denoted by alpha .  Where  alpha or α is the significance level. Type 2 error is…

Q: The overall question is: Is this sufficient evidence to say that the two true proportions are…

A: Here compare proportion of male and female said yes

Q: If you use a 0.10 level of significance in a two-tail hypothesis test, what is your decision rule,…

A: level of significance  = 0.10 Two-tail hypothesis test

Q: Define the Goal of hypothesis testing?

A: A statistical hypothesis is an assumption about a population parameter. Hypothesis testing refers to…

Q: State why a non-significant outcome does not mean the null hypothesis is probably true?

A:

Q: Why do experimenters test hypotheses they think are false?

A:

Q: A larger treatment effect means the hypothesis test has more power. True or False?

A: Power of the test explains the chance of not happening type II error. It is the correct rejection of…

Q: Which conclusion is appropriate for this hypothesis test? Our data do not suggest that there is a…

A:

Q: What does hypothesis test indicates?

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

Q: What is a null hypothesis?

A: Hypothesis:Hypothesis is an assumption about the parameter of the population which will be made on…

Q: What is the relationship between an alternative and a null hypothesis?

A: Note: Hi there! Thank you for posting the questions. As there are several independent questions.…

Q: If you have questioned that your significant hypothesis test is significant “enough” to have true…

A: Introduction - Hypothesis- In statistics , a hypothesis is defined as a formal statement , which…

Q: What does it mean for the results of a hypothesis test to be statistically significant?

A: f we reject the null hypothesis it mean our hypothesis test to be statistically significant.

Q: What is H0? And why do we evaluate it instead of the scientific hypothesis?

A: Statistician use the term H0 which is under statistical hypothesis and scientists use the scientific…

Q: What is the difference between a null hypothesis and a research hypothesis?

A: Null hypothesis:Null hypothesis is a statement which is tested for statistical significance in the…

Q: Judge and Cable (2010) found that thin women had higher incomes than heavier women. Is this an exam-…

A: Exp study involves manipulation of control variable. Non exp study doesn't involve manipulation of…

Q: Explain why accepting the null hypothesis is not a possible outcome.

A: Hypothesis:- A statistical hypothesis is some assumption or claim about the population.

Q: The test statistic for this hypothesis? The p value

A: We have given that  Sample size, n = 848 Favourable cases, X = 425 Sample proportion, p^ = X/n =…