Suppose that a hypothesis test is performed at a small significance level. State the appropriate conclusion in each case by referring to Key Fact 2. a. The null hypothesis is rejected.b. The null hypothesis is not rejected.

Q: If the null hypothesis is rejected at a level of significance of 5%, then in some cases, it could be…

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

Q: a) Identify the null and alternative hypotheses? Ho: ? v HA: ? v b) What type of hypothesis test…

A: Given : population mean , μ = 98.6

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: if the null hypothesis should be rejected and researchers reject it they have committed.? which of…

A: Type I error: The type I error is the rejection of the null hypothesis when it is actually true.…

Q: d.) Do we reject or fail to reject the null hypothesis? e.) Is there enough evidence to support the…

A: We know that  Degree of freedom = ( row - 1 ) × ( col -1 ) And level of significance =alpha =0.01

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: a) Identify the null and alternative hypotheses? Ho: ? Ha: ? v b) What type of hypothesis test…

A: Given: Sample size, n=2494 Number of patient experience Nausea, x=870

Q: 3. In the case of hypothesis testing of one sample (for large samples): If α value is greater than…

A: Solution

Q: Traditionally in hypothesis testing, the null hypothesis represents the "status quo" which will be…

A: Null hypothesis The hypothesis which are under the test. Alternative hypothesis The hypothesis which…

Q: (1) We are conducting many hypothesis tests to test a claim. Assuming the null hypothesis is true,…

A: Since you have asked multiple question, according to our guidelines we will solve the first question…

Q: If the significance level in a hypothesis test is 5%, the null hypothesis would be rejected if the…

A: The probability of obtaining a statistic or test statistic value at least as extreme as the observed…

Q: a certain country a newspaper reports that the average salary of a teacher in the country is…

A:

Q: Explain why the null hypothesis should not be accepted?

A: The hypothesis which is tentatively fixed up and tested for the possible rejection of it under the…

Q: If the level of significance for a test for independency was 5% and the p-value was 0.03, what would…

A: Given,   P-value = 0.03 Level of significance = 0.05   The objective is to find the conclusion.

Q: In a hypothesis test, the likelihood of rejecting the null hypothesis is independent of the sample…

A: Introduction: In a hypothesis testing problem, the decision regarding rejection/ failure of…

Q: Which of the following is the correct way of stating the null hypothesis of the given problem?

A: Test is that whether there is a relationship between the post-test scores of students in Algebra and…

Q: If a hypothesis test leads to the rejection of the null hypothesis, a _____.   a. Type II…

A: Type I error is the rejection of a true null hypothesis, while a Type II error is the non-rejection…

Q: In hypothesis testing, if the null hypothesis is rejected, which of the following is accepted? A.…

A: Sol

Q: If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make…

A: Alpha = 0.05 Two tailed test Zstat = 1.2

Q: What are the null hypothesis (H,) and the alternative hypothesis (H,) that should be used for the…

A: Claim is that the mean systolic blood pressure of CEOs of major corporation is less than 134 mm Hg.…

Q: what is the zobserved value for the hypothesis test?

A: It was stated that I believe that caffeine can improve the capacity of short-term memory (STM). It…

Q: A teacher is comparing the mean study time of his freshmen and senior students. He believes that his…

A:

Q: If you use a 0.05 level of significance in a​ two-tail hypothesis​ test, what decision will you make…

A: Given  ZSTAT=-1.52, ɑ=0.05 Two tailed hypothesis

Q: et the null hypothesis.

A: It is given that, When testing a hypothesis at a level of significance 0.10.   From t-statistic, the…

Q: Suppose the significance level of a certain hypothesis test is α = 2.5% and the p-value is equal to…

A: Decision rule: If P-value ≤ α, then reject the null hypothesis. Otherwise, fail to reject the null…

Q: suppose a hypothesis test is conducted where the level of significance a= 0.05 and the test results…

A:

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: Which of the elements of a test of hypothesis can and should be specified prior to analyzing the…

A: In the field of statistics, a hypothesis is a claim about some aspect of a population. A hypothesis…

Q: State your conclusion to the hypothesis test. Is achieving a basic skill level in a subject…

A: It is given that the value of chi-square test statistic is 0.30. Level of significance = 0.01.…

Q: Traditionally in hypothesis testing, the null hypothesis represents the "status quo" which will be…

A: Given three statements. We have to choose which of the statements might represent a null hypothesis.…

Q: t is more difficult to reject a null hypothesis if we use a 10% level of significance compared with…

A: Given that  Rejection of null hypothesis Level of significance (α)= 0.10 Level of significance (α) =…

Q: Consider the following statements: (i) If a researcher fails to reject the null hypothesis, then…

A: 1.  If a researcher fails to reject the null hypothesis, then the alternative hypothesis should be…

Q: In tests of significance, it is possible to reject the null hypothesis and yet still have a…

A: Given that the null hypothesis is rejected.

Q: The statement "If there is sufficient evidence to reject a null hypothesis at the 5% significance…

A: Decision rule: If p-value is less than or equal to significance level, reject the null hypothesis.…

Q: In a recent study it was found that of 450 physicians polled 162 were women and of 530 nurses polled…

A: Given claim: The proportion of nurses who are women is greater than the proportion of physicians who…

Q: the same as the calculated value.     A. True

A: Critical value is the value in hypothesis testing which separates the curve into the rejection…

Q: The critical boundaries for a hypothesis test are z = +1.96 and -1.96. If the z-score for the sample…

A: Decision rule:Denote z as test statistic value and z(α/2) as the critical value.Decision rule based…

Q: What is a null hypothesis?

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

Q: Traditionally in hypothesis testing, the null hypothesis represents the "status quo" which will be…

A: Traditionally in hypothesis testing, the null hypothesis represents the "status quo" which will be…

Q: What is the z-value for a two-sided hypothesis test on a population mean when a=.05?   1. 1.645…

A:

Q: 2. What is your null hypothesis? (in words)

A: Given that  Here  Number of participant =7

Q: The mean SAT Score in mathematics is 506. The founders of a nationwide SAT preparation course claim…

A: Null and alternative hypotheses: The hypothesis which is tentatively fixed up under and tested for…

Q: If the null hypothesis is false, you cannot make which kind of error? Type I Type II

A: Type I error: The type I error occurs when rejecting the null hypothesis when it is true. It is…

Q: If the null hypothesis (3:5:2) is true, determine the expected number of students that score A, B…

A: a) If the Null Hypothesis is true which means the ratio of grades is valid Then, Expected Values…

Q: Express the null hypothesis and the alternative hypothesis  in notation form in the following…

A: To express the Null hypothesis and Alternative Hypothesis in notation form for the given statment…

Q: develop a research question that can be addressed with the dependent-samples t test, making sure to…

A:

Q: A large manufacturing firm is being charged with discrimination in its hiring practices. (a) What…

A: Given data:  large manufacturing firm is being charged with discrimination in its hiring practices.…

Q: Is the following a null or an alternative hypothesis? Iced coffee tastes better than hot coffee.

A: null hypothesis is  a statement that there is no relationship Alternative hypothesis is a statement…

Q: A software company advertises that its software can improve students' grades by at least 15%.  One…

A: Types of errors: Rejecting a true null hypothesis is called a Type I error. Failing to reject a…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.