If the value of the observed test statistic falls in the rejection region, the alternative hypothesis is rejected. True False

Q: .Is this a one-tailed or two-talled test The alternative hypothesis is The critical value is

A: Test is that whether there is a difference in proportion of voters in districts A and B who are in…

Q: A statistical procedure in determining which hypothesis is more acceptable as true or which…

A: HERE USE basic  hypothesis testing

Q: In a hypothesis test, the test statistic computed from the sample data is considered extreme or…

A: A test statistic is a random variable that is calculated from sample data and used in a hypothesis…

Q: Why does a large value of the F statistics provide evidence against the null hypothesis?

A: We use F-statistic (F ratio) when we are comparing the group means like ANOVA test for for more than…

Q: State the statistical hypotheses (null and alternative) for a two-tailed test against a known…

A: In this context, the known population mean is 90.

Q: Dr. Rivera believes that mood disorder is less prevalent among older adults than it is among young…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

Q: What are the assumptions for using a two-sample independent t-test?

A: Given : Two-sample independent t-test :    This test is also called as two-sample t-test     This…

Q: Is the test statistic in the rejection region? how do you know ?

A:

Q: Explain why the P-value of a hypothesis test is also referred to as the observed significance level.

A: In this case, one is needed to explain the reason for referring the P-value as the observed…

Q: For a one-way ANOVA test, suppose that, in reality, the null hypothesis is false. Does that mean…

A: ANOVA: Hypotheses: H0: µ1 = µ2 = µ3 =…= µk. H1: At least one of the µ’s different.

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: What is the critical value for a one-tailed hypothesis test in which a null hypothesis is tested at…

A:

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

A:

Q: When the null hypothesis is true for an ANOVA, what is the expected value for the F-ratio?

A: When the null hypothesis is true for an ANOVA, expected value for the F-ratio is 1 since the top and…

Q: What is a p-value and how is it used to make a decision about the null hypothesis? How is the…

A: 1. The p-value or the calculated probability can be defined as the probability of finding the…

Q: What is the appropriate null hypothesis for this test? b. What is the sample size for this data? c.…

A: a) degrees of freedom for groups is 2. Thus, number of treatments is 3. The hypotheses to be tested…

Q: A p-value indicates the probability of a particular sample statistic occurring (or a more extreme…

A: We have to find that given statement is true or false...

Q: The instructor thinks that texting will decrease the student’s ability to concentrate. What are the…

A: Claim: The instructor thinks that texting will decrease the student’s ability to concentrate.…

Q: The value for the test statistic for a left-tailed one mean z-test is z= -1.19. Determine the…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: It states that the observed data is not significantly different from the expected data. O Null…

A: Given that  Statement : The observed data is not significantly different from the expected data.…

Q: If the test statistic is -1.8 on the Z distribution at a 3% significance level for a left-sided…

A: According to the given information in this question We need to identify the correct option

Q: What are factors to consider in choosing in a P-value for a hypothesis test?

A: Answer:-  There are 3 factors need to consider in choosing a P value.

Q: A rejection region (or a critical region) is the region that specifies the values of the observed…

A: Given statement is TRUE

Q: how you recognize when an inferential statistics problem involves either a confidence interval…

A:

Q: how should a decision that fails to reject the null hypothesis be​ interpreted?

A: The dean of a major university claims that the mean number of hours students study at her…

Q: What is the test statistic in Fisher’s test? What are the expected outcomes of the Fisher’s test?

A: Fisher's test is a statistical test used in analysing the contingency tables. This test gives more…

Q: How can someone recognize when an inferential statistics problem involves either a confidence…

A: Confidence interval is used to find the true value of the estimate of population parameter by using…

Q: Which element of a test of a hypothesis is used to decide whether to reject the null hypothesis in…

A: Know that  Level of significance =alpha  Null and alternative hypothesis is denoted by H0 and H1.

Q: An advertising executive wants to determine if a new billboard placed in a city caused sales of…

A: Given that we need to test to determine if a new billboard played in a city caused sales of their…

Q: In order to test the hypothesis, you need to choose a critical -Score.

A: The choice of the appropriate distribution in a statistical test is subject to different factors.

Q: If an ANOVA test is conducted and the null hypothesis is rejected, what does this indicate?

A: ANNOVA is a statistical technique that assesses potential differences in a scale-level dependent…

Q: What is the normal hypothesis and alternative hypothesis?

A: In probability and statistics, the null hypothesis is a comprehensive statement or default status…

Q: What is the relation between the significance level of a hypothesis test and the probability of…

A: Type I error:Probability of rejecting the null hypothesis when it is actually true.

Q: What is the Type II error probability of this test?

A:

Q: Define Large-Sample Distribution of the Two Stage Least Square Estimator, When the Instrument Is Not…

A:

Q: a.) Interpret the result of the Analysis of Variance (ANOVA). What is the statistical decision and…

A: Based on the information provided in the question , Here the Null and Alternate Hypothesis would…

Q: Test the claim that the proportion of men who own cats is smaller than 40% at the .005 significance…

A:

Q: Based on the data and results of test for normality in the table, complete the parts of hypothesis…

A:

Q: Is the attached problem a two sample test for a two sample normal means hypothesis test? Not sure…

A: The given problem is an example of two independent sample t-test. a) H0: Population variances of the…

Q: 13. What is the correct decision in a hypothesis if the data produce a t-statistic that is in the…

A:

Q: Explain the difference between a one-tailed and two-tailed significance test. When is it appropriate…

A: A significance hypothesis test is a very important part in statistics.

Q: Assuming that the null hypothesis is true, the ______________ is the probability of observing a…

A: Assuming that the null hypothesis is true, the p-value is the probability of observing a value of…

Q: A large p-value indicates that the data is consistent with the alternative hypothesis.   True or…

A: The p-value is the likelihood of obtaining the value of sample statistic which would be as extreme…

Q: For a right-tail test, if the test statistic is greater than the critical value, what conclusion…

A: When there is a right tail test. The critical region is above the critical value. When the test…

Q: A small p-value means that the probability of obtaining a sample mean more extreme than the one…

A: Given : Statement : A small p-value means that the probability of obtaining a sample mean more…

Q: What is the value of the sample test statistic for a one-sided hypothesis test conducted using a 1%…

A: Given n1=50 n2=40 x¯1=4.35x¯2=5.84σ1=1.20σ2=1.36α=0.01

Q: The area of inferential statistics called hypothesis testing is a decision-making process for…

A: Introduction: Inferential statistics is the branch of statistics, that is involved in making…

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.