What is the null and alternative hypothesis when using Pearson's r for hypothesis testing in statistics?

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: How would you explain the analysis of variance, assuming that your audience has not had a statistics…

A:

Q: A professor wants to determine how the GPAs of his students in his statistics class differ from the…

A: The objective of the question is to identify the appropriate statistical test that the professor…

Q: Why is the Method of Moments estimator, in mathematical statistics, consistent?

A: Given that:  Method of Moments estimator, in mathematical statistics:

Q: Suppose that in a random selection of 100 colored candies, 26% of them are blue. The candy company…

A:

Q: What is Inferential statistics? why it is used for?

A: Inferential statistics is a branch of statistics that involves the drawing of a conclusion from the…

Q: Could you please help me understand the difference between a z-test and a t-test for in statistics?

A: Both the tests are useful to test the significance of means.Both the tests are assume a normal…

Q: The final scores of games of a certain sport were compared against the final point spreads…

A: From the provided information, Sample size (n) = 225 Sample mean (x̅) = -1.1 Population standard…

Q: What is the interpretation of a Pearson's r correlation coefficient of 0.8 in hypothesis testing?

A: Understanding Pearson's r Correlation Coefficient Pearson's r correlation coefficient measures the…

Q: A researcher conducted a research that majority of people who died during pandemic bought a new…

A: Given: Research that majority of people who died during pandemic

Q: Would a sophomore year statistics class students’ average age be a good Point Estimator(This is a…

A: Yes, as usually students in sophomore year are of certain age and the age range is not so huge,…

Q: For tests of Homogeneity of Variance the preferred outcome is to reject the Null hypothesis. True…

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Q: What does reject the null and fail to reject the null mean? When is either of these applied?

A: In the hypothesis testing , there are two hypothesis to be tested : null hypothesis &…

Q: When statisticians use the phrase “inferential statistics”, what is the word inferential referring…

A: Here, we have to discus when and why statisticians use inferential statistics.

Q: State the null and alternative hypothesis for the data

A: The hypothesis is the claim that is tested statistically. There are two types of the hypothesis…

Q: Explain the meaning of the term hypothesis as used in inferential statistics.

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

Q: Please help write a research and null hypothesis for this statistical analysis.

A: Hypothesis testing is used to test the significance between the sample and population. Each…

Q: A certain drug is used to treat astihma. In a clinical trial of the drug, 17 of 266 trealed subjects…

A: Given.sample size n=266          and x=17Sample proportion p^=xnp^=17266=0.0639d)  Null…

Q: A business travel magazine wants to classify transatlantic gateway airports according to the mean…

A: Given data: n = 15 Significance level  = 0.05 Given Claim: Population mean rating greater than 7…

Q: Provide an example of a research project in your hometown where the one-sample chi-square test would…

A: A chi square test is used to test the comparison between observed and expected results. The main…

Q: Why is it important for students of behavioral research to understand statistics

A: Behavioral Research is a human science which is deals with research in social and behavioral…

Q: What is the formula for a two tailed test?

A: In two-tailed test the critical area of a distribution is two-sided.  If the sample being tested…

Q: Suppose you are asked to conduct a two-tailed hypothesis test on the population mean. What type of…

A: Here we want to conduct two tailed hypothesis test for mean

Q: is take for one-way between-subjects analysis of variance? Why can’t it be summarized in a single…

A: The amount of variation among the sample means or the variation attributable to the difference among…

Q: What is the null hypothesis of a test for correlation?

A: Test is that whether correlation is significant i.e whether or not correlation is zero.

Q: What is Inferential Statistics?

A: Descriptive and inferential statistics: Descriptive statistics concerned with describing the target…

Q: 3. The mean Verbal SAT was 515 for 238 college students who took this test. The norm of the test…

A: Given: Sample size (n) = 238 Sample mean(x¯)= 515 Hypothesized mean (μo) = 500 Standard deviation…

Q: 2. An educator wants to determine whether early exposure school will affect IQ. He enlists the aid…

A: Given :  12 pairs of IQ => N  = 12

Q: How is statistical power related to hypothesis testing?

A: The power of statistical test (1-β) is the probability that you will reject the null hypothesis when…

Q: She made 10

A: Given that A typical 12-ounces serving of beer is said to be 150 calories. The above statement…

Q: What does “empirical” mean as it applies to inferential statistics

A: In general , Data remain in random samples : For any experiment : Data observation is most important…

Q: Describe a study in which you can use both nonparametric and parametric statistics. A researcher has…

A: In survival analysis studies both parametric and non-parametric statistics are used. For example, in…

Q: When is analysis of variance a more appropriate use of a statistical technique than a test between a…

A: ANOVA is simply the analysis of variance. It involves testing the difference between two or more…

Q: o the population variance

A: Generally, we obtain the variance based on the sample data but if in the problem there is mention…