Which of the following research hypotheses is said to be non-directional? Ha: Salary ≠ $165,000 Ha: Obedience < 65%
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Which of the following research hypotheses is said to be non-directional?
Ha: Salary ≠ $165,000
Ha: Obedience < 65%
Given two hypothesis
Ha :Salary ≠ 165000
Ha : Obidience < 65%
A statistical hypothesis is said to be directional when the alternative hypothesis specifies the direction of the tested relationship. This happens when there are symbols > or < in alternate hypothesis.
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- Which one of the following hypotheses about the causes of cirme would be the most difficult to test? a.poor parenting b.natural instincts c.poor policing d.persistent povertyWhich pair of the hypotheses would be correct for the following claim: Claim: The percentage of cars sold with manual transmission is 2018 (group 1) is lower than the percentage of cars sold with manual transmission in 2010 (group 2) A. H0 :p1 −p2 =0andH1 :p1 −p2 <0 B. H0 :p1 −p2 <0andH1 :p1 −p2 =0 C. H0 :p1 −p2 =0andH1 :p1 −p2 ̸=0 D. H0 :p1 −p2 ̸=0andH1 :p1 −p2 =0 E. H0 :p1 −p2 =0andH1 :p1 −p2 >0 F. H0 :p1 −p2 >0andH1 :p1 −p2 =0Use the following table to answer question 5:Running Time School Average Running Time School Standard DeviationKia 4.9 5.2 0.15Alejandra 4.2 4.6 0.25Iris 4.5 4.9 0.125. Which person is the fastest runner relative to her school?a. Alejandrab. Kiac. Tie between Alejandra and Kia
- Which of the following statements are true? |. In a data-set that is symmetric, the mean is approximately equal to the medi II. In a data-set that is right-skewed, the mean will be less than the median III. Skew of a data set has a negligible effect on the mean, but can strongly affec medianA consumer magazine wants to figure out which of two major airlines lost a higher proportion of luggage on international flights. The magazine surveyed Standard Air (population 1) and Down Under airlines (population 2). Standard Air lost 45 out of 600 bags. Down Under airlines lost 30 of 500 bags. Does Standard Air have a higher population proportion of lost bags on international flights? Which of the following is the correct competing hypotheses?Failing to meet one or more of the 9 Brandford-Hill criteria means that the studied relationship should not be considered causal. A. True B. False
- Answer the following using the Boxplot attached. 1a) Which region (North or South) has the town with the largest mortality?b) Which region (North or South) has the town with the smallest mortality?c) In terms of the central tendency, which region has a higher mortality?d) Is the mortality more dispersed in the North or the South?Which of these is a question that would require a z test? Question 31 options: Does a sample of couples who communicate primarily by texting have a higher relationship satisfaction than that of a sample of couples who communicate primarily by phone? Does a sample of nurses in large hospitals get sick more often than a sample of nurses in smaller hospitals? Does a sample of people from rural communities have different levels of social intelligence than a sample of people from urban centers? Does a sample of purebred dogs live longer than dogs in general?State the alternative hypotheses for the following claim: The average bowling score for a leisure bowler is 140.
- An English professor at WCC wanted to test to see if students retained more information from reading a 19th-century novel or by watching it in DVD form.Each student was assigned one novel to read and a different one to watch, and then they were given a 100-point quiz on each. The test results are shown below:Book 90 80 90 75 80 90 84 60DVD 85 72 80 80 70 75 80 75At the 0.05 level of significance, does the data provide evidence to suggest the book scores are higher on average? Step 1: Define the parameter & setup the testStep 2: State the Level of SignificanceStep 3: Find the value of the Test StatisticsStep 4: Find P-Value OR Find Critical ValueStep 5: State Conclusion and whyIs the following a non-directional (two tailed) or directional (one tailed) hypothesis? Students who sit in the front of the class have a different average grade compared to those who sit in the back of the class.The research hypothesis refers to the ______, whereas the null hypothesis refers to the ______. Group of answer choices population; sample sample; population direction; sample population; direction