When using a dependent samples t-test, df = O n + n2 -1 On-2 On-1 O nn + n2- 2
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- Five statistics students (n=5) are compared to a sample of 8 sociology students with regard to the number of hour they sleep. Here is the data for hours slept for the statistics students:8, 6, 5, 13, 10Here is the data for 8 sociology students (n=8).7, 4, 7, 8, 10, 12, 9, 6Conduct a t-test to determine if the statistics students sleep a different amount than the sample of sociology students? Be sure to address all four steps of the hypothesis test.Three-circle, red-on-white is one distinctive pattern painted on ceramic vessels of the Anasazi period found at the Wind Mountain archaeological site. At one excavation, a sample of 174 potsherds indicated that 72 were of the three-circle, red-on-white pattern. How many ceramic potsherds must be found and identified if we are to be 95% confident that the sample proportion p̂ of such potsherds is within 5.2% of the population proportion of three-circle, red-on-white patterns found at this excavation site? (Round your answer up to the nearest whole number.)John in conducting an independent samples t-test. In his data, Group 1 has 32 participants and Group 2 has 30 participants. What are the degrees of freedom for his test? Enter your answer as a whole number with no decimal places (i.e., 10, not 10.01, not 10.1)
- The mean of the 5 observations in the following table is -4. Fill in the missing values. xx x−¯xx-x¯ (x−¯x)2(x-x¯)2 -7 3 -6 10 -20 x -7 3 -6 10 -20 Determine the following sums:∑x=∑x=∑(x−¯x)=∑(x-x¯)=∑(x−¯x)2=∑(x-x¯)2= Sample variance, s2=s2= Report the sample standard deviation accurate to 2 decimal places.Sample standard deviation, s=s=Diagnostic tests of medical conditions can have several types of results. The test result can be positive or negative, whether or not a patient has the condition. A positive test (+) indicates that the patient has the condition. A negative test (−) indicates that the patient does not have the condition. Remember, a positive test does not prove the patient has the condition. Additional medical work may be required. Consider a random sample of 200 patients, some of whom have a medical condition and some of whom do not. Results of a new diagnostic test for a condition are shown. Condition Present Condition Absent Row Total Test Result + 108 22 130 Test Result − 21 49 70 Column Total 129 71 200 Assume the sample is representative of the entire population. For a person selected at random, compute the following probabilities. (Enter your answers as fractions.) (a) P(+ | condition present); this is known as the sensitivity of a test. Your answer must be a fraction,…Q1 Ken is a sports teacher in a college and he wants to examine whether there is any difference in the students' maximum vertical jumps before and after the training program. Ken selects a simple random sample of 12 students and measure their maximum vertical jumps. Then he provided a training program to these 12 students for a month and measured the maximum vertical jumps again at the end of the month. Student 1 2 3 4 7 8. 9. 10 11 12 Max vertical jump (cm) before training program 22 20 19 24 25 25 28 22 30 27 24 18 Max vertical jump (cm) after training program 24 22 19 22 28 26 28 30 29 25 20 (a) Test, at the 0.05 level of significance, whether there is difference in the students' maximum vertical jumps before and after the training program. (b) State the assumption(s) required for the analysis in (a). (c) Find the range of the p-value for the test in (a).
- Sample n = 50 female entrepreneurs, 9 said they are credit constrained in their business Find the 95% Cl and the 90% for the proportion of female entrepreneurs are credit constrained in their business.(#2) Please explain!Diagnostic tests of medical conditions can have several types of results. The test result can be positive or negative, whether or not a patient has the condition. A positive test (+) indicates that the patient has the condition. A negative test (−) indicates that the patient does not have the condition. Remember, a positive test does not prove the patient has the condition. Additional medical work may be required. Consider a random sample of 200 patients, some of whom have a medical condition and some of whom do not. Results of a new diagnostic test for a condition are shown. Condition Present Condition Absent Row Total Test Result + 106 24 130 Test Result − 23 47 70 Column Total 129 71 200 Assume the sample is representative of the entire population. For a person selected at random, compute the following probabilities. (Enter your answers as fractions.) (a) P(+ | condition present); this is known as the sensitivity of a test.(b) P(− | condition present); this is…
- Give me answer within 45 min please I will give you upvote immediately its very urgent ...thankyou..Three-circle, red-on-white is one distinctive pattern painted on ceramic vessels of the Anasazi period found at the Wind Mountain archaeological site. At one excavation, a sample of 160potsherds indicated that 70 were of the three-circle, red-on-white pattern. How many ceramic potsherds must be found and identified if we are to be 95% confident that the sample proportion p̂ of such potsherds is within 5.0% of the population proportion of three-circle, red-on-white patterns found at this excavation site? (Round your answer up to the nearest whole number.)The owner of a small pet supply store wants to open a second store in another city, but he only wants to do so if more than one-third of the city's households have pets (otherwise there won't be enough business). He samples 150 of the households and finds that 64 have pets. Reference: 4-11-StepByStepNo Tech Describe how you would generate a single randomization sample in this situation, and identify (using the appropriate notation) the sample statistic you would record for each sample.
