A university has decided to introduce the use of plus and minus grading as long as there is evidence that 60% of the faculty is in support of this change. Write an appropriate null hypothesis and alternate hypothesis to test if the proportion is greater than 60%.

Q: ) What conclusions can be drawn from this hypothesis test?

A: a) H0:μ=15.7VersusHa:μ<15.7   Level of significance valueα=0.05 Test statistic value of T = x-μsn…

Q: What is the P-value of a hypothesis test? When does it provide evidence against the null hypothesis?

A: Introduction: P-value: The P-value can be defined as the probability of obtaining a sample result,…

Q: Minnesota had the highest turnout rate of any state for the 2012 Presidential election (United…

A: Given : x1 = 663 n1 = 884 x2 = 414 n2 = 575

Q: Minnesota had the highest turnout rate of any state for the 2016 presidential election. Political…

A: (a) State the hypotheses. That is, there is no evidence to conclude that registered voters in rural…

Q: What is the​ p-value if, in a​ two-tail hypothesis​ test, ZSTAT=+1.16​?       ​p-value=

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Q: are conducting a study to see if the accuracy rate for fingerprint identification is significantly…

A: A hypothesis is said to be left tailed, if the population parameter is less than some hypothesized…

Q: The average scores of students in the final exam in two neighboring colleges are equal. If a…

A: Given, The average scores of students in the final exam in two neighbouring colleges are equal.…

Q: Last year, 46% of business owners gave a holiday gift to their employees. A survey of business…

A: Given: population proportion(p)=0.46sample proportion(p^)=0.35sample size(n)=60

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: 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: An Internal Revenue Service official says, "The percentage of taxpayers who overpay the taxes they…

A: Introduction: The “Missouri Rule” in setting up of the hypotheses is such that the claim is placed…

Q: Explain what it means to accept the null hypothesis?

A: We need to define null and alternative hypothesis.

Q: Be able to state the null hypothesis for both one-tailed and two-tailed tests?

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Q: The one-tailed test only uses the null hypothesis whereas a two-tailed test uses both the null…

A: One tailed test :          The one tailed test  in which critical region is one sided it is either…

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: The p-value for a left-tail hypothesis test on μ is determined to be .17. Given the .05 level of…

A: The p-value for a left-tail hypothesis test on μ is determined to be 0.17.

Q: If a null hypothesis is rejected at the 0.05 level of significance, it must be rejected at the 0.01…

A: Statement: " If a null hypothesis is rejected at the 0.05 level of significance, it must be rejected…

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: 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: What is the difference between failing to reject the null hypothesis and having evidence to support…

A: Given that  What is the difference between failing to reject the null hypothesis and having evidence…

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: What is the null and alternative hypothesis?

A: Test is that whether mean time for painting a medium-sized room without using the tool is greater…

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

A: Note: Thank you for the question. Since multiple questions are posted, according to our policy, we…

Q: health provider saw that 48% of their members received their flu shot in recent years. The health…

A: Hypothesis testing plays a major role in research and development. To diagnose the underlying cause…

Q: What is the null hypothesis H0 and the alternative hypothesis H1?

A: Here p=76%              =76/100            =0.76 So null and alternative hypothesis is  Null…

Q: Four drug companies are studying the effect of their new drugs. In its clinical trials, company A…

A: 1) False, Company B is more likely to reject null hypothesis Because significance level is high 2)…

Q: A presidential candidate claims that the proportion of college students who are registered to vote…

A: Claim : The proportion of college students who are registered to vote in the upcoming election is at…

Q: Minnesota had the highest turnout rate of any state for the 2016 presidential election.† Political…

A: (Let p1 = the population proportion of voters in rural Minnesota who voted in the 2016 election and…

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: A researcher would like to test the claim that the proportion of middle-aged smokers with a lung…

A: Claim of the study;A researcher would like to test the claim that the proportion of middle-aged…

Q: what are the potential mistakes when setting up a null and alternative hypothesis.

A: The hypothesis test is a statistical method in which one using the sample data try to check the…

Q: What is a null hypothesis?

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

Q: An advertisement firm is making a new marketing strategy and selling rates are being considered.…

A: There are two independent samples which are existing strategy and new strategy. Both samples follows…

Q: Many consumer groups feel that the U.S. Food and Drug Administration (FDA) drug approval process is…

A: Given data: The FDA wants to set up a hypothesis test to show that the new drug is safe before…

Q: A recent article in a university newspaper claimed that the proportion of students who commute more…

A: Claim : The proportion of students who commute more than 15 miles to school is no more than 20%. Let…

Q: The proportion of residents in a community who recycle has traditionally been 65%. A policy maker…

A: The proportion of residents in a community who recycle has traditionally been 65%. A policy maker…

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: The p-value for a hypothesis test turns out to be 0.00694. At a 9% level of significance, what is…

A: Solution Given p value = 0.00694 Significance level = 0.09 We reject the null hypothesis when p…

Q: In Malaysia legal system, a defendant is presumed innocent until proven guilty. Consider a null…

A: Consider a null hypothesis, H0, that a defendant is innocent an alternative hypothesis, H1, that the…

Q: Among a simple random sample of 331 American adults who do not have a four-year college degree and…

A: Given, p^=0.48n=331 (a).The hypothesis to be tested here is- H0: p=0.5H1:p>0.5 This is a left…

Q: When a result is not extreme enough to reject the null hypothesis, explain why it is wrong to…

A: The type II error occurs when the false null hypothesis is not rejected.

Q: Give introduction to Hypothesis Testing?

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Q: When asked what it means for the result of a hypothesis test to be practically significant (or…

A:

Q: A poll reported that 32% of 195 Canadians between the ages of 25 and 29 had started saving money for…

A: The random variable started saving for retirement follows binomial distribution. There are two…

Q: If a researcher rejects the null hypothesis when conducting a hypothesis test, it means that the…

A: Alternate hypothesis is the claim made by researcher   If the researcher rejects the null…

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

A:

Q: WHen writing a null hypothesis for a two sample t test. Do you write U1 = U2 or U1 - U2 = 0? Or do…

A: WHen writing a null hypothesis for a two sample t test. Do you write U1 = U2 or U1 - U2 = 0? Or do…

Q: A school board in a large district is investigating whether parents would be willing to extend the…

A: Conditions for the sampling distribution of the sample proportion to be approximately normal is…

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…