Select the representative hypotheses (null / alternative) that will yield the chart below. entical
Q: H₁: 0² = 0}; H₁:0² # 0} 02 H。: 0} = 0}; H₂: 0} # 0² Ho: = o; Ho tỏ 02 2
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- I need help with stats/2023, section 7.1, Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A report claims that more than 74% 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 (1) ______________ (contains or does not contain) a statement of equality, it represents the (2) ________________ (null or alternative) hypothesis. (a) How should you interpret a decision that rejects the null hypothesis? There (3) ___________ (is or is not) enough evidence to (4)_____________ (reject or support) the claim that more than 74% of households in a county struggle to afford basic necessities. There (5) ____________ (is or is not) enough evidence to (6)…STEPS IN STATISTICALHYPOTHESIS TESTING 1. Analyze the problem2. Formulate the null and alternative hypothesis3. Determine the tails of the test4. Determine the test to be used5. Compute6. Conclude Instruction:Using the steps in hypothesis testing, test the following hypotheses using the appropriate test statistic. A sports researcher would like to determine if the “wonder wristband” can increase the speed of runners. He took the 100m dash time of 6 runners before wearing the bracelet, their time follows: 9.82, 10.12, 7.89, 8.12, 8.59, 8.49 and then the same runners’ time while wearing the bracelet: 9.99, 10.52, 7.50, 6.54, 8.99, 6.87. Find out if there is a significant difference in time without the bracelet and with the bracelet.Find the P-value with z-score (1) if doing a right-tail hypothesis test
- The two approaches for testing hypotheses are: Select one: a. one-tailed and two-tailed b. p-value and critical value c. null and alternative d. Type I and Type IIWhich of the following would be an appropriate null hypothesis? The sample mean is greater than 3.4 O The sample mean is equal to 3.4 O The population mean is not equal to 3.4 The population mean is equal to 3.4 The population mean is equal to 3.4 « Previous MacBook AirA decade-old study found that the proportion of high school seniors who felt that getting rich" was an important personal goal was 66%. Suppose that we have reason to believe that this proportion has changed, and we wish to carry out a hypothesis test to see if our belief can be supported. State the null hypothesis H. and the alternative hypothesis H, that we would use for this test. Ho: H OSO Submit Assignmen Privacy Accessibili Continue O 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use revious
- State the null and alternative hypotheses Calculate the expected results for the hypothesis test assuming the null hypothesis is true and determine the hypothesis test model , i.e., “cut-off” critical values etc. Formulate the decision rule, i.e., include “one-tail ”left, or “one-tail” right, or “two-tail” determination etc. Determine the experimental outcome. Determine the conclusion, and answer the question(s) posed in the problem, if any. To test whether or not there is a difference between the mean grade point averages of male math majors and female math majors at a certain university, 2 random samples were gathered. For the 35 males we find that the sample mean is 3.1 with s=0.2. For the 20 females, the sample mean is 3.2 with s=0.15. Test at a 1% level of significance.The researchers would like to enhance the skills of 21st century learners through astrategy that uses software application which fits their learning style. Two classes with thesame capacity to learn were used as the respondents of their study. The first class wastaught using the GeoGebra app while the other class was taught using the traditionalmethod. The researchers gave a 30- item achievement test after exposing the two classeswith different methods. Hypotheses of the study are presented below while the achievement scores of thestudents and the result of t-test using Microsoft Excel are found on the next page. Null Hypothesis: There is no significant difference between the achievement of thestudents who used the GeoGebra app and traditional method. Alternative Hypothesis: There is a significant difference between the achievementof the students who used the GeoGebra app and the traditional method. 1. The p-value from the t-test table is 0.04 while the significance level for…State the null and alternative hypotheses Calculate the expected results for the hypothesis test assuming the null hypothesis is true and determine the hypothesis test model , i.e., “cut-off” critical values etc. Formulate the decision rule, i.e., include “one-tail ”left, or “one-tail” right, or “two-tail” determination etc. Determine the experimental outcome. Determine the conclusion, and answer the question(s) posed in the problem, if any. The average IQ of a group of researchers is quoted to be 260. Thinking that this figure is too large, a consulting firm tested a random sample of 8 researchers and found that the average IQ was 250 with s=8. Test at a level of significance of 1%.
- Apply the 6 steps in hypothesis testing: 1. Formulate the H0 and Ha2. Choose test statistic (such as z- test, t-test, or F-test)(? unknown = t-test; ? known = z- test)3. Determine the critical region/ rejection region4. Calculate the test statistic5. Provide statistical decision (Reject/ or not to reject H0)6. Make an interpretation and if possible, draw a conclusion. A random sample of 8 cigarettes of a certain brand has an average nicotine content of 4.2 milligrams and a standard deviation of 1.4 milligrams. Is this in line with the manufacturer’s claim that the average nicotine content does not exceed 3.5 milligrams? Use a 0.01 level of significance and assume the distribution of nicotine contents to be normal.what is the null hypothesis statement and alternative hypothesis statement for the second one (right side)?Formulate the appropriate null and alternative hypotheses H0 and Ha.