The mean SAT Score in mathematics is 506. The founders of a nationwide SAT preparation course claim that graduates of the course score higher, on average, than the national mean. Suppose that the founders of the course want to carry out a hypothesis test to see if their claim has merit. State the null hypothesis H and the alternative hypothesis H, that they would use.

Q: Need P-Value, Decision on the Null hypothesis, and Interpret the Result, answered thank you.

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Q: What is the null hypothesis and alternative hypothesis?

A: Given Information: Data indicates the scores of 10 subjects in the first test and scores of the…

Q: A politician believes that 60% of constituents are in favor of a particular issue. She takes a…

A: Null hypothesis:A statistical hypothesis which is assumed and whose validity is tested for possible…

Q: Is the null hypothesis Ho rejected at the a = 5% level?

A: here given data of blood type of americans

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: a. What are the hypotheses for Mary's project? b. Verify the requirement for this hypothesis testing…

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Q: What are the two kids of errors we can make in hypothesis testing?

A: The two kinds of errors are 1)Type 1  2)Type 2  Type 1 Error: It is referred as False Positives. It…

Q: State the general steps of the P-value approach to hypothesis testing.

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Q: The p-value for a hypothesis test turns out to be 0.08621. At a 5% level of significance, what is…

A: Decision rule : Reject H0 if P-value  <  α

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: The mathematics department at one university reports that the failure rate for College Algebra is no…

A: 2 types of errors. Type 1: Rejecting null hypothesis when it is True Type 2: Fail to reject null…

Q: Come up with your own hypothesis testing scenario. What is an example of a null and research…

A: Suppose it is claimed that the average weekly salary of a waiter at restaurant in USA is $800 with…

Q: Store owner asks 55 people in City A and 50 households in City B whether anyone in their household…

A: Introduction: Denote p1, p2 as the true population proportions of households that had used their…

Q: which figure is the null hypothesis, and which figure is the alternative hypothesis

A: The null hypothesis is denoted by Ho and alternative hypothesis is denoted by Ha or H1.

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: 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: The mean SAT score in mathematics is 523. The founders of a nationwide SAT preparation course claim…

A: Given that :   Population mean = 523 By using hypothesis testing concept; Ho :  H1 :

Q: Since the latest Axios poll said that 44% of Americans said that kneeling was appropriate, we will…

A: After asking the 50 people , Lets assume : Number of people who said kneeling during national anthem…

Q: The National Center for Education Statistics would like to test the hypothesis that the proportion…

A: GivenThe national center for education statistics would like to test the hypothesisthat the…

Q: The mean SAT score in mathematics is so6. The founders of a nationwide SAT preparation course claim…

A: Null hypothesis: Null hypothesis is the statement about parameter of population. Alternative…

Q: In performing a hypothesis T-test, the p-value was 0.00046 and the significance level was 5%.  What…

A: Given,   P-value: 0.00046 Level of significance = 0.05   The objective is to find the conclusion.

Q: The National Center for Education Statistics would like to test the hypothesis that the proportion…

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Q: When do we use alpha and beta in hypothesis testing?

A: Basics: Alpha is the probability of  making  Type I error in hypothesis test . i.e incorrectly…

Q: A random sample of 100 students at a high school was asked whether they would ask their father or…

A: There are two independent samples which are follows normal distribution. The number of successes,…

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: A college informs incoming students that the starting salary for a child clinical psychiatrist is…

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

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: The p-value for a hypothesis test turns out to be 0.07774. At a 9% level of significance, what is…

A: It is given that the The p-value for a hypothesis test turns out to be 0.07774 i.e. P-value =…

Q: The p-value for a hypothesis test turns out to be 0.06787. At a 6% level of significance, what is…

A: It is given that,  The p-value for a hypothesis test turns out to be 0.06787 i.e. P-value= 0.06787…

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: 2. Is the hypothesis above a one-tail or a two-tail hypothesis?

A: We have given that  Sample size n= 1000 Favorable cases x = 89 Sample proportion p^=x/n

Q: In a recent sample of 250 households, 45% of them owned a video game console. A hypothesis test was…

A: Solution To find type 2 error we will use the definition that a type 2 error occur when the null…

Q: The mean SAT score in mathematics is 516. The founders of a nationwide SAT preparation course claim…

A:

Q: If, in a (two-tail) hypothesis test, the p-value is 0.0187, what is your statistical decision if you…

A: given data  two tailed test p value = 0.0187 significance level = 0.04

Q: 3. Today, in a random sample of 30 people, Trump received an approval rating of 30% world- wide. On…

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Q: A national magazine stated that at most, 18% of millennials have a sports club membership. Formulate…

A: One sample t test is used to test whether the sample mean is came from the population or not. The…

Q: A medical billing specialist claims that the proportion of ER patients who do not have health…

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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: Last year, 44% of business owners gave a holiday gift to their employees. A survey of business…

A: Given Information: Last year, 44% of business owners gave a holiday gift to their employees i.e., π0…

Q: A college informs incoming students that the starting salary for a child clinical psychiatri:…

A: The null hypothesis is a typical statistical theory which suggests that no statistical relationship.…

Q: A researchers claims 45% of couples have children. They conduct a hypothesis test and reject the…

A: Type I Error : Reject H0 when H0 is true.

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: The p-value for a hypothesis test turns out to be 0.0985. At a 8% level of significance, what is the…

A: Decision rule:

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 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: Give introduction to Hypothesis Testing?

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Q: (a) Identify the null hypothesis and alternative hypothesis.

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

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…

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.