Explain how does the null hypothesis test using a t ratio.

Q: Rejecting a true alternative hypothesis, H1 leads to committing a type II error

A: here use type 2 error definition

Q: This is rejecting Ho when it is true. If the alternative hypothesis says not equal to we know are…

A: We have to match the given definitions with the given terms.

Q: What are the hypotheses and conclusion of the Mean Value Theorem? What physical interpretations…

A:

Q: Summarize the steps of hypothesis testing. What is the virtue of this procedure?

A: Given We have to summarize the steps of hypothesis testing. And What is the virtue of this…

Q: Prove the general formula for interval estimation of ratio of population variance.

A: Statement:-  If x1,x2..... xn ~ N(μx, σx2) and y1, y2 .....ym ~ N(μy , σy2) are independent random…

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: The USDA limit for salmonella contamination for chicken is 20%. A meat inspector reports that the…

A: From the given information, Consider p be the proportion for salmonella contamination for chicken. p…

Q: writing an appropriate null and alternative hypothesis

A: here use basic of hypothesis testing

Q: Hypotheses can be tested by quantitative research O True False

A: Given statement  Hypotheses can be tested by quantitative research.

Q: What is formula for z score?

A: A z-score is a score which is computed to find out the number of standard deviations a value is away…

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: Do you think that a margin of error greater than 5% is appropriate when conducting a research?

A: Margin of error helps to understand the confidence level of the research or survey. It is calculated…

Q: Calculate the standard error of the difference between means?

A:

Q: Your medical research team is investigating the mean cost of a 30-day supply of a certain heart…

A: Givenclaim is pharmaceutical company thinks that the mean cost is less than$95

Q: what is the importance of coefficient values for proving or disproving the hypotheses?

A: Certainty Interval for coefficient These certainty interims (CI) are scopes of qualities that are…

Q: Formulate the standard error of the difference between means?

A: Known population standard deviations: Let a sample of size n1is taken from a population with mean…

Q: How do I solve for the mean, quartile 1 and 3?

A: To calculate the mean, median, mode, quartile 1 and quartile 2 of the given data, we should first…

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 Standard Error of the Difference between Means?

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Q: Why is it useful to obtain the power curve for a hypothesis test?

A: Power of a test:It is the chance or the probability of correctly rejecting the null hypothesis H0…

Q: For the chi-square test of independence, how is the p-value evaluated?

A:

Q: Your medical research team is investigating the mean cost of a 30-day supply of a certain heart…

A: Solution

Q: Your medical research team is investigating the mean cost of a 30-day supply of a certain heart…

A: The claim The mean cost is less than $100

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: 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: Compare these two, does the number of cups of coffee has an effect on the general average of a…

A: Given information: The data represents the values of the variables x = Number of cups and y =…

Q: What are the steps for a hypothesis test for population mean when the variance is known?

A: Given the variance for hypothesis test for population , To write the steps for the hypothesis test…

Q: How to Compute the standard error of the difference between means?

A: Standard error of the mean: The standard error of the mean is defined as the value of the standard…

Q: Can you explain the hypothesis?

A: Concept:Null hypothesis is the hypothesis of no difference. Alternative hypothesis is the claim

Q: What are the assumptions for t test for the population correlation coefficient?

A: Correlation: Correlation is the measure of association between two variables in which one variable…

Q: What are the requirements to perform a goodness of fit test?

A: The chi-square goodness of fit is mainly used to compare the observed sample distribution with the…

Q: Explain briefly when to use the Z-test, t-test and F-test in the hypotheses testing.

A: Solution: -  1) Z-test: - Following conditions are met before apply the Z-test : 1) The samples must…

Q: company wants to test if the average amount in the 12oz cans that they produce is less than it…

A: Given: Hypothesized mean μ=12

Q: Explain why the F-ratio is expected to be near 1.00 when the null hypothesis is true.

A: Given Null Hypothesis is true which indicates the treatment has no systematic effect The error term…

Q: The federal government would like to test the hypothesis that the average age of men filing for…

A:

Q: Brown wants to conduct an assessment of where employees live and how employees work. Brown wanted to…

A: Here we have two variables : " where employees live" and "how employees work"   The probable answer…

Q: What are the Four Steps to use when working with the t-test ?

A: The Four Steps to use when working with the t-test with p-value approach is given below: Step 1:…

Q: Describe about the testing of hypothesis.

A: First of all, we know that the hypotheis is a statement about a parameter which we want to claim.…

Q: Give detail introduction about the Standard Error of the Difference between Means?

A: Standard error of the mean: The standard error of the mean is defined as the value of the standard…

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: The standard error of the sample mean is proportional to the square root of the sample size? true or…

A: The standard error of the sample mean is proportional to the square root of the sample size?

Q: Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim a…

A: Solution: Since the claim represents a statement of equality , it represents the null hypothesis .

Q: Does second order slip perform better than the first order slip ?Justify your answer with evidence

A: Yes, second order slip performs better than the first order slip.

Q: Why is the Chi- square test applicable to the given scenario?

A: For the given sample data, we will conduct a chi-square test for independence.

Q: The P-value for a hypothesis test is 0.052. What is your decision if the level of significance is…

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Q: A formal hypothesis test is to be conducted using the claim that the mean height of students is…

A:

Q: What is a post hoc test and why don’t you need it if your ANOVA is not significant

A: In ANOVA we test that whether the groups are different. Note : Since you have asked multiple…

Q: From this: What type of test would this be? (t- test, z-test, etc) What hypothesis is reasonable?

A:

Q: How do you test hypotheses with T-tests?

A: T-tests are statistical hypothesis tests that are used to analyse one or two sample means. Depending…