Practice #3: What is the approximate P-value associated with a two-tailed t-test in a situation where n = 8 and t = - 1.6?
Q: How do i find the p-value without using excel for a two tailed test? Z-score known.
A: Here p-value from z score is possible with z score Table .
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Practice #3: What is the approximate P-value associated with a two-tailed t-test in a situation where n = 8 and t = - 1.6?
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- Would you favor spending more federal tax money on the arts? Of a random sample of n1 = 217 women, r1 = 52 responded yes. Another random sample of n2 = 175 men showed that r2 = 48 responded yes. Does this information indicate a difference (either way) between the population proportion of women and the population proportion of men who favor spending more federal tax dollars on the arts? Use ? = 0.05. (a) What is the level of significance? (b) What is the value of the sample test statistic? (Test the difference p1 − p2. Do not use rounded values. Round your final answer to two decimal places.)(c) Find (or estimate) the P-value. (Round your answer to four decimal places.)Plzzz explain.Women athletes at the a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 36 women athletes at the school showed that 20 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67%? Use a 1% level of significance. What is the value of the sample test statistic? (Round your answer to two decimal places.)(c) Find the P-value of the test statistic. (Round your answer to four decimal places.)
- How do you solve for the t statistic?Scores derived from a patient satisfaction survey are Normally distributed with standard deviation 6.0, with high scores indicating high satisfaction. You collect a sample of n = 36 from a hospital in Reno and you find a sample mean of 28.0. You want to test if the mean score in the Hospital is different than 30. What is the null hypothesis of the test (in words)? Group of answer choices The mean is equal to 30 The mean is different than 30 The mean is less than 30 The mean is greater than 30You are playing a dice game with a friend and become suspicious that he is using weighted dice. So you stop the game, take one of his dice, and roll it 100 times. The results are in the table below. Do these results provide significant evidence that the proportion of times the dice lands on the six numbers are unequal? Calculate the chi-squared test statistic and the range the p-value falls in for this test. Number on die 1 2 4 Frequency 16 21 6 26 13 18 test statistic = 14.12, p-value in (.01, .025) test statistic = 24.368, p-value in (.005, .01) test statistic = 14.12, p-value in (.025, 05) test statistic = 24.368, p-value less than .005 O none of these
- There is a weekend fishing competition that Boris participates in each year. There are several other fishing boats that participate in this competition. Among all of the competitors, the number of fish caught this year had a mean of 31 fish and a standard deviation of 6 fish. Boris caught 38 fish. (a) Find the z-score of the number of fish that Boris caught relative to the numbers of fish caught among all the competitors. Round your answer to two decimal places. (b) Fill in the blanks to interpret the z-score of the number of fish that Boris caught. Make sure to express your answer in terms of a positive number of standard deviations. The number of fish that Boris caught was standard deviations (Choose one) the mean number of fish caught among all the competitors.how would you do this? ignore my answer i was just guessing. this is a non graded mcq practiceProfessor Nord stated that the mean score on the final exam from all the years he has been teaching is a 79%. Colby was in his most recent class, and his class’s mean score on the final exam was 82%. Colby decided to run a hypothesis test to determine if the mean score of his class was significantly greater than the mean score of the population. α = .01. What is the mean score of the population? What is the mean score of the sample? Is this test one-tailed or two-tailed? Why?
- 0190 F A researcher is interested in whether violent offenders can be taught moral reasoning skills and hopes that these skills might eventually lead to a lesser likelihood for recidivism. He randomly selected a sample of 20 violent offenders. He assigned half to the treatment (moral reasoning skills training) (Mean = 8, SD = 1.41), and the other half to no training (Mean = 4.83, SD = 1.71). Does moral reasoning training increase moral reasoning ability in violent offenders?Imagine you are doing a Related-Samples t-test, and you are on Step Four of the hypothesis test. The study you are doing is testing whether there’s a significant difference between the anxiety of people before and after a final exam. The APA sentence is t(28) = 3.45, p < .05, d = 1.05. What is the correct set of conclusions that goes with this APA sentence? Group of answer choices Reject the H0, conclude that there IS a difference in anxiety, conclude based on effect size that the difference is small. Fail to Reject the H0, conclude that there IS a difference in anxiety. Reject the H0, conclude that there IS NOT a difference in anxiety, conclude based on effect size that the difference is small. Fail to Reject the H0, conclude that there IS NOT a difference in anxiety. Reject the H0, conclude that there IS a difference in anxiety, conclude based on effect size that the difference is large.Debra attends a fashion institute that has no on-campus housing. The mean distance commuted to campus among all students at the fashion institute is 16 kilometers with a standard deviation of 6 kilometers. The distance Debra commutes is 29 kilometers. (a) Find the z-score of Debra's commute distance relative to the commute distances amongll the students at the institute. Round your answer to two decimal places. (b) Fill in the blanks to interpret the z-score of Debra's commute distance. Make sure to express your answer in terms of a positive number of standard deviations. Debra's commute distance is standard deviations (Choose one) v the mean commute distance among all students at the institute. Submi Continue MacBook Air
