According to the wall street journal, in 2011 the average (or mean) cable bill was $ 128 per month. You believe that the mean cable bill is higher today. Please state the null and alternative hypothesis.

Q: What is a Null Hypothesis? What does the word “null” mean? How does the Null Hypothesis differ from…

A: We have to define null hypothesis.

Q: A hypothesis test is to be performed. Determine the null and alternate hypotheses. In  1995 , the…

A: Given  μ=mean=7.7  We want to find the hypothesis.

Q: In statistics why can't we accept the null hypothesis?

A: To perform a hypothesis test, it is first necessary to define an assumed set of conditions…

Q: Come up with an example of a scenario in which you could use hypothesis testing.  What would you be…

A: Find: Here we find that explains the hypothesis testing terms with a real example or a scenario.…

Q: General Social Survey conducted by StatsSA, participants was asked the following questions: 1. Do…

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Q: In the questions that follows, we are conducting many hypothesis tests to test a claim.…

A: a) n = 800, p = 0.05 Expected number of significant results = np =800 × 0.05= 40

Q: A baseball coach wants to know if watching baseball movies will improve his players' performance.…

A: Solution: From the given information, the claim is that a baseball coach wants to know if watching…

Q: James is a school psychologist who wants to implement stress coping skills to help his students. His…

A: Here the direction of the test is to the left.

Q: The statement that you want to find statistical evidence for is the hypothesis. O a. alternative O…

A: We need to find the appropriate hypothesis for which we want to find statistical evidence .

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: State the research hypothesis and null hypothesis       Would the researchers use a one- or…

A: From the above data we are given that  A researcher wants to know whether people who regularly…

Q: what would happen if you mixed up the null and alternative hypothesis

A: The hypothesis that there is no significant difference between specified populations, any observed…

Q: Suppose we want to test the claim that  the proportion of Californians who prefer single-family home…

A: From the given information,   Claim: Suppose we want to test the claim that  the proportion of…

Q: In the following​ situations, is the alternative hypothesis​ one-sided or​ two-sided? What are the​…

A: Introduction: A one-sided alternative hypothesis may be of the greater-than type or right-tailed…

Q: d) What impact does this change in the spam cutoff value have on the chance of each type of error in…

A: Here our hypothesis is that, H0: Not a spam v.s. HA: Email is spam. Now, we classify an email as a…

Q: What's the null hypothesis?

A: Test is that whether that treatment has in increasing effect on the mean.

Q: Why do we need to use Hypothesis testing??

A: Hypothesis testing is a statistical procedure that use the sample data to make conclusions about 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: Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. The principal introduces a…

A: At one school, the average amount of time that tenth-graders spend watching television each week is…

Q: A company that manufactures classroom chairs claims that the mean breaking strength of the chairs…

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Q: Professor Nord stated that the mean score on the final exam from all the years he has been teaching…

A: From the provided information, Professor Nord stated that the mean score on the final exam from all…

Q: the non-directional null hypothesis? What is the alternative hypothesis?

A: Hypothesis in statistics are the statements which need to be tested on the basis of the observed…

Q: A medical survey in 2015 indicated that 48% of Australian adults prefer to take a generic drug than…

A: From the provided information, 48% of Australian adults prefer to take a generic drug than pay more…

Q: a) What is the name of the hypothesis test that should be done ? b) What hypotheses should be tested…

A: A) the name of the  hypothesis test to be used is  T test for testing the mean B) H0: μ = 128…

Q: Come up with you own hypothesis testing scenario. What are examples of a null and research…

A: Suppose we have the age of the male and female of the city. and to find the claim that the mean age…

Q: What is the difference between the null hypothesis and the alternative hypothesis when doing a…

A: Basics:

Q: Your statistics instructor claims that 60 percent of the students who take her Elementary Statistics…

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Q: A researcher thinks that the mean starting salary for San Jose State University graduates is under…

A: Claim: The mean starting salary for San Jose State University graduates is under $100,000 per year…

Q: ed on records in the past 5 academic years, the sophomore biology class has a mean score of 75. The…

A: In hypothesis testing, two hypotheses are formed, namely null and alternate hypotheses. The…

Q: If you use a 0.02 level of significance in (two-tail) hypothesis test, what is your decision for…

A: Here, α=0.02 Population mean is 750. The test is two-tailed. Null and alternative hypotheses are :…

Q: Part a) When performing a hypothesis test, what effect does increasing the sample size have on the…

A: a) On increasing the sample size, probability of occurrence of type 1 error will decrease because…

Q: nswer the following questions: What is the null hypothesis? What is the alternative hypothesis?…

A: A method to decide whether to reject a null hypothesis and conclude in favor of the alternative…

Q: Which conclusion is appropriate for this hypothesis test? Our data do not suggest that there is a…

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Q: A Gallup Poll in November of 2008 showed that 22% of men (110 out of 500) said they were seriously…

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 is a null hypothesis?

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

Q: In the p-value approach, if p-value>α (the level of significance) we reject the null hypothesis.…

A:

Q: How do you determine whether or not the paired t test is appropriate for a two-sample hypothesis?

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Q: We reject the null hypothesis when the probability of obtaining a sample mean more extreme than the…

A: The interpretation regarding the p-value is to be made using an appropriate explanation.

Q: Is the following hypothesis testable, refutable, and positive? Explain your answer. People who pray…

A: Testable hypothesis- (Observable) Testable hypothesis is  can be used as the basis for an…

Q: In general terms, what is a hypothesis test? Are hypothesis tests based on descriptive statistics or…

A: Hypothesis test in an inferential test which helps to make decisions about the population by using…

Q: In conducting a significance test, is it easier or harder to reject the null hypothesis when it's a…

A: One-tailed test: One tailed test is a statistical test in which the distribution of area is one…

Q: What does it mean for the results of a hypothesis test to be statistically significant?

A: f we reject the null hypothesis it mean our hypothesis test to be statistically significant.

Q: What is the difference between simple hypothesis and a composite hypothesis? Why might economists…

A: Our aim is to discuss the difference between simple hypothesis and a composite hypothesis.

Q: Give Steps of hypothesis testing ?

A: Given: Hypothesis-testing:

Q: What does it mean for a hypothesis test to be "significant"? How is this different from our everyday…

A: A test result is statistically significant when the sample statistic is unusual enough relative to…

Q: The mean IQ of statistics teachers is greater than 120. Write the null and alternative hypotheses.

A: Given, The mean IQ of statistics teachers is greater than 120 Therefore, The Null Hypothesis is Ho:…

Q: A fellow student tells you the P-value is the probability that the null hypothesis is true, so when…

A: Meaning and usefulness ofp-value in hypothesis testing.

Q: A coin-operated drink machine was designed to discharge a mean of 9 ounces of coffee per cup.…

A: The question is about formulation of null and alt. hypo. Given : Popl. mean of coffee machine…