Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesistest is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject thenull hypothesis?A report claims that less than 78% of households in a specific county struggle to afford basic necessities.Does the claim represent the null hypothesis or the alternative hypothesis?Since the claima statement of equality, it represents thecontainsdoes not containhypothesis. KDetermine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesistest is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject thenull hypothesis?A report claims that less than 78% of households in a specific county struggle to afford basic necessities.Does the claim represent the null hypothesis or the alternative hypothesis?Since the claima statement of equality, it represents thehypothesis.alternativenullp

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In hypothesis testing, if the test statistic falls in the critical region then we reject the null hypothesis. a. Trueb. False
Scenario: A researcher wants to see whether ESP abilities in psychics differ based on environment. Thus, the researcher has psychics predict card suits in both a fortune-telling environment (e.g., low lighting, candles, a crystal ball), and in a standard lab environment. They complete 100 trials of the task in each environment, with the environment type counterbalanced between participants. All 30 psychics completed the card prediction task in both environments. Accuracy rates are compared. Question: What is the dependent variable in this scenario? Group of answer choices Environment Accuracy rate ESP Card suit
Bullying,” according to noted expert Dan Olweus, “poisons the educational environment and affects the learning of every child.” Bullying and victimization are evident as early as preschool, with the problem peaking in middle school. Suppose you are interested in the emotional well-being of not only the victims but also bystanders, bullies, and those who bully but who are also victims (bully-victims). You decide to measure anxiety in a group of bullies and a group of victims using an 18-item, 5-point anxiety scale. Assume scores on the anxiety scale are normally distributed and that the variances of the anxiety scores are the same among bullies and victims. The group of 23 bullies scored an average of 40.1 with a sample standard deviation of 10 on the anxiety scale. The group of 28 victims scored an average of 46.8 with a sample standard deviation of 11 on the same scale. You do not have any presupposed assumptions about whether bullies or victims will be more anxious, so you formulate…
Do sit down restaurant franchises and fast food franchises differ significantly in stock price? Specifically, is the average stock price for sit-down restaurants different from the average stock price for fast food restaurants? If sit down restaurants are considered group 1 and fast food restaurants are group 2, what are the hypotheses of this scenario?
None
Hypothesis Test: Perform the specified hypothesis test. Be sure to include your statistical andin-context conclusion statements. In 1994, 52% of parents with children in high school felt it was a serious problem that high schoolstudents were not being taught enough math and science. A recent survey found that 512 of 1000 parentswith children in high school felt it was a serious problem that high school students were not being taughtenough math and science. Do parents feel different today than they did in 1994? Use the α = 0.005significance level.
10.If the p-value _____ level of significance (α), then _________ the null hypothesis H0. A.≤; reject B.≤; do not reject C.None of the choices D.≥; accept
Describe a potential example of a "repeated measures t-tests" (see Ch. 11) that could be conducted within the social sciences, and list what you believe the outcome of the research would be for this study. No data or calculations are necessary whatsoever, but you should describe why you developed your chosen hypothesis (e.g., based on your own understanding of current research, real world observations, a wild guess, etc.).
True or False: The larger the sample size, the more extreme the z-score value It is possible to have both a Type I and Type II error when conducting a hypothesis test The null hypothesis is a statement of inequality
Scenario: A researcher wants to see whether ESP abilities in psychics differ based on environment. Thus, the researcher has psychics predict card suits in both a fortune-telling environment (e.g., low lighting, candles, a crystal ball), and in a standard lab environment. They complete 100 trials of the task in each environment, with the environment type counterbalanced between participants. All 30 psychics completed the card prediction task in both environments. Accuracy rates are compared. Question: Which of the following best describes the scenario? Between-subjects Within-subjects Mixed design
In general terms, what does an alternative hypothesis (H1) say? Group of answer choices There is a treatment effect in the sample There is no treatment effect in the population There is a treatment effect in the population There is no treatment effect in the sample

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null hypothesis? A report claims that less than 78% of households in a specific county struggle to afford basic necessities. ... Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim a statement of equality, it represents the hypothesis.