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SAT scores: The College Board reports that in 2018 the mean score on the math SAT was 527 and the population standard deviation was 0-102. A random sample of 20 students who took the test in 2019 had a mean score of $12. Following is a dotplot of the 20 scores. 100 200 300 400 Part: 2/6 500 (a) Are the assumptions for a hypothesis test satisfied? No, the sample size is too small and the sample does not appear to come from a population with an approximately normal distribution. Yes, the sample size is large enough to perform the test, whether or not the population is normally distributed. 600 Yes, the sample size is small, but we can see that the sample seems to come from a population with an approximately normal distribution. State the null and alternate hypotheses. Ho: μ-527 H₁: #527 This hypothesis test is a two-tailed X 700 (b) Perform a hypothesis test to determine whether you can conclude that the mean score in 2019 differs from the mean score in 2018. Assume the population standard deviation is a-102. Use the a-0.10 level of significance and the P-value method with the TI-84 Plus calculator. test. 800 Compute the value of the test statistic. Round the answer to two decimal places.

SAT scores: The College Board reports that in 2018 the mean score on the math SAT was 527 and the population standard deviation was 0-102. A random sample of 20 students who took the test in 2019 had a mean score of $12. Following is a dotplot of the 20 scores. 100 200 300 400 Part: 2/6 500 (a) Are the assumptions for a hypothesis test satisfied? No, the sample size is too small and the sample does not appear to come from a population with an approximately normal distribution. Yes, the sample size is large enough to perform the test, whether or not the population is normally distributed. 600 Yes, the sample size is small, but we can see that the sample seems to come from a population with an approximately normal distribution. State the null and alternate hypotheses. Ho: μ-527 H₁: #527 This hypothesis test is a two-tailed X 700 (b) Perform a hypothesis test to determine whether you can conclude that the mean score in 2019 differs from the mean score in 2018. Assume the population standard deviation is a-102. Use the a-0.10 level of significance and the P-value method with the TI-84 Plus calculator. test. 800 Compute the value of the test statistic. Round the answer to two decimal places.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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find 1. Z value 2. P Value 3. T value 4. Reject or do not reject 5. State conclusion
SAT scores: The College Board reports that in 2018 the mean score on the math SAT was 527 and the population standard deviation was 0-102. A random sample of 20 students who took the test in 2019 had a mean score of 512. Following is a dotplot of the 20 scores. 100 200 300 400 Part: 2 / 6 500 (a) Are the assumptions for a hypothesis test satisfied? No, the sample size is too small and the sample does not appear to come from a population with an approximately normal distribution. 600 Yes, the sample size is large enough to perform the test, whether or not the population is normally distributed. 700 Yes, the sample size is small, but we can see that the sample seems to come from a population with an approximately normal distribution. State the null and alternate hypotheses. H : | u =527| H₁: #527 This hypothesis test is a two-tailed test. (b) Perform a hypothesis test to determine whether you can conclude that the mean score in 2019 differs from the mean score in 2018. Assume the population standard deviation is G-102. Use the a-0.10 level of significance and the P-value method with the TI-84 Plus calculator. 800 Compute the value of the test statistic. Round the answer to two decimal places.
Transcribed Image Text:SAT scores: The College Board reports that in 2018 the mean score on the math SAT was 527 and the population standard deviation was 0-102. A random sample of 20 students who took the test in 2019 had a mean score of 512. Following is a dotplot of the 20 scores. 100 200 300 400 Part: 2 / 6 500 (a) Are the assumptions for a hypothesis test satisfied? No, the sample size is too small and the sample does not appear to come from a population with an approximately normal distribution. 600 Yes, the sample size is large enough to perform the test, whether or not the population is normally distributed. 700 Yes, the sample size is small, but we can see that the sample seems to come from a population with an approximately normal distribution. State the null and alternate hypotheses. H : | u =527| H₁: #527 This hypothesis test is a two-tailed test. (b) Perform a hypothesis test to determine whether you can conclude that the mean score in 2019 differs from the mean score in 2018. Assume the population standard deviation is G-102. Use the a-0.10 level of significance and the P-value method with the TI-84 Plus calculator. 800 Compute the value of the test statistic. Round the answer to two decimal places.
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