Is the statement below correct? Explain. "The calculated t-value is greater than the critical T-value from the table, hence we reject the null hypothesis, therefore the alternative hypothesis is correct
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Is the statement below correct? Explain.
"The calculated t-value is greater than the critical T-value from the table, hence we reject the null hypothesis, therefore the alternative hypothesis is correct."
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- Repeat Example 5 when microphone A receives the sound 4 seconds before microphone B.Find the critical value, the computed t-value, and whether to reject or accept the null hypothesis.A ten-year study found that the proportion of high school seniors who believed "getting rich" was an important personal goal was70%. Suppose we have reason to believe that this ratio has changed and we want to perform a hypothesis test to see if this can be supported. Formulate the null hypothesish and the alternative hypothesish that would be used to perform this test. ho: 0 h₁:0 μ <2 OSO хр O S X O(Upload the picture of your solutions. Follow the steps in Test of Hypothesis including your conclusion and round off the critical value and test statistic into 4 decimal places) STEPS: Formulate a null hypothesis (Ho) and the alternative hypothesis (H ). Set the level of significance. Identify the type of statistical test as either one tailed or two tailed test. Determine the tabular value for the test. (Z, t, Chi-square, f) Compute for the required statistical test value. PROBLEM: Amstat News (December 2004) lists median salaries for associate professors of statistics at research institutions and at liberal arts and other institutions in the United States. Assume a sample of 200 associate professors from research institutions having an average salary of $70,750 per year with a standard deviation of $6000. Assume also a sample of 200 associate professors from other types of institutions having an average salary of $65,200 with a standard deviation of $5000. Test the hypothesis that…Scientist Irish used a paired t-test to test the effectiveness of a drug she is developing. She obtained a p-value = 0.005 (she used α = 0.05). Suppose the drug actually works. Which of the following statements is correct? Irish should not have rejected the null hypothesis because the p-value is too large. Type I error occurred. Type II error occurred. There was no error.Because the t value you found is _______ , you decide to ________ the null hypothesis. (Note that this conclusion is also supported by the significance reported by SPSS.) Group of answer choices in the critical region, reject in the critical region, accept NOT in the critical region, accept NOT in the critical region, rejectDetermine the null and alternative hypotheses. Identify the test statistic, r. Identify the critical value(s). (Round to three decimal places as needed.) State the conclusion.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.A teacher giving a true/false test wants to make sure her students do better than they would if they were simply guessing, so she performs a hypothesis test. Her null hypothesis is that a student will get 50% of the questions on the exam correct. The alternative hypothesis is that the student is not guessing and should get more than 50% in the long run. Н,р-0.50 Н:р>0.50 Give a possible p-value for data that are not statistically significant at the 10% level.You interview a random sample of 50 adults. The results of the survey show that 46% of the adults said they were more likely to buy a product when there are free samples. At α=0.05, can you reject the claim that at least 52% of the adults are more likely to buy a product when there are free samples? A. State the null and alternative hypothesis B. Determine the critical value(s) (Will you provide details of how you found the critical value). C. Find the z-test statistic (Will you provide details of how you found the z-test statistic). D. Does the data, reject Ho or fail to reject Ho and why?A statistics student conducts a t-test for difference in means to decide whether there is a significant difference in test scores between her Fall semester course and her Spring semester course. The t-test value she calculated was t = 3.15. She compared this to the t-critical value of 1.98. Does she reject or not reject her null hypothesis? Reject Do not rejectMORE BENEFITS OF EATING ORGANIC Using specific data, we find a significant difference in the proportion of fruit flies surviving after 13 days between those eating organic potatoes and those eating conventional (not organic) potatoes. This exercise asks you to conduct a hypothesis test using additional data. In this case, we are testing Ho: Po = Pc Ha: Po > Pc where p, and pc represent the proportion of fruit flies alive at the end of the given time frame of those eating organic food and those eating conventional food, respectively. Use a 5 % significance level. Effect of Organic Soybeans After 5 Days After 5 days, the proportion of fruit flies eating organic soybeans still alive is 0.89, while the proportion still alive eating conventional soybeans is 0.83. The standard error for the difference in proportions is 0.022. What is the value of the test statistic? Round your answer to two decimal places. Z = What is the p-value? Round your answer to three decimal places. p-value = iSEE MORE QUESTIONS
