Sometimes the research hypothesis is considered to be Question 5 options: the exciting hypothesis. the boring hypothesis. testable only with parametric statistics. untestable because assumptions are not met.

Answered: Sometimes the research hypothesis is…

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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The null hypothesis states that there is no difference between a parameter and a specific value, or that there is no difference between two parameters.
HR department wants to make sure that their hiring practices are independent of gender. In other words, they want to ensure that both men and women have an equal chance of being hired. The observed data related to this survey is summarized in the following table: Observed frequency Male Female Total Hired 45 35 Not Hired 32 28 Total Given Ho = “HR department hired male and female employees equally”, decide whether to reject or fail to reject the null hypothesis (α = 0.05).
A sociologist wants to study what proportion of people have significant relationship problems due to financial stress. A previous study she is aware of estimated it to be 32% but she believes this has increased in modern times. She collects a random sample of 150 people and 63 of them report relationship problems due to financial stress. Conduct an appropriate hypothesis test in questions #22-#25. Compute the Z-score for this hypothesis test and round to two decimal places. z = 1.58 z = 2.06 z = 2.63 z = 0.84
A school psychologist is interested in the efficiency of administration for a new intelligence test for children. In the past, the Wechsler Intelligence Scale for Children (WISC) was used. Thirty sixth grade children are given the new test to see whether the old intelligence test or the new intelligence test is easier to administer. Is this a non-directional or directional hypothesis? How do you know?
A psychologist is concerned about the health of veterans returning from war. She examines 25 veterans and finds that 34% show signs of post-traumatic stress disorder. Later research reveals the truth to be that 11% of veterans show signs of post-traumatic stress disorder. Is 34% a statistic or a parameter? Parameter Statistic Not enough information to determine
For the following scenarios provide the following: the null and alternative hypotheses explain whether the hypothesis test is left-tailed, right-tailed, or two-tailed, explain how you should interpret a decision that rejects the null hypothesis, and explain how you should interpret a decision that fails to reject the null hypothesis. A Don Anderson Poll reports that on average 70% of Jamaicans believe that electricity bills are too high. b. Sunshine Cooperation guarantees that the mean shelf life of cornflakes is at least 750 days. Consumer Affairs has advised that the standard deviation of the fuel economies of its а. с. Honda Civics for 2016 is no more than 10.7 miles per gallon.
Problem 2You’re looking into two manufacturers (A and B) from which to purchase a large number ofpaving slabs for a large-scale construction project. You may use one manufacturer as a backupif necessary, but only if there’s no significant difference in the weights of their paving slabs.Formulate and draw conclusions with ?? = 0.01 about a set of hypotheses using a nonparametrictest. Use the data in attached.
Section 11.2 Question #4 The table below includes results from polygraph (lie detector) experiments conducted by researchers. In each case, it was known if the subjected lied or did not lie, so the table indicates when the polygraph test was correct. Use a 0.05 significance level to test the claim that whether a subject lies is independent of the polygraph test indication. Do the results suggest that polygraphs are effective in distinguishing between truth and lies? View the table Did the Subject Actually Lie? No (Did Not Lie) Yes (Lied) Polygraph test indicated that the subject lied. 9 48 Polygraph test indicated that the subject did not lie. 30 12 Determine the test statistic. χ2= _________ (Round to three decimal places as needed.) Determine the P-value of the test statistic. P-value= ___________ (Round to four decimal places as needed.)
Please circle your answers. Thank you in advanced!
Question 5: what is the conclusion?
Annie conducts a study to examine the differences in stress levels between pet owners and non-pet owners. She conducts a two-tailed test and tells that she rejected the null hypothesis. Therefore, which of these statements is true? Question 8 options: Pet owners have more stress than non-pet owners. Pet owners have less stress than non-pet owners. Pet owners' and non-pet owners' stress levels differ, but it is not known how they differ. Pet owners' and non-pet owners' stress levels do not differ.
determine the following statement is a valid reason for using nonparametric methods? - We are reluctant to assume strong conditions on the data. (True or False)

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	the exciting hypothesis.
	the boring hypothesis.
	testable only with parametric statistics.
	untestable because assumptions are not met.