A data set includes data from student evaluations of courses. The summary statistics are n = 93, x = 3.66, s = 0.62. Use a 0.01 significance level to test the claim that the population of student courseevaluations has a mean equal to 3.75. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion thataddresses the original claim.What are the null and alternative hypotheses?OA. Ho: H=3.75H₁: <3.75OC. Ho: H=3.75H₁: >3.75Determine the test statistic.(Round to two decimal places as needed.)*B. Hoi k = 3.75H₁: 3.75OD. Ho:3.75H₁: 3.75

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Answered: A data set includes data from student…

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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Data were collected from 400 patients in the US about their estrogen level. Out of the 400, 35 patient have abnormal estrogen levels. On a national level, 8 % of patients have abnormal estrogen level. Researchers want to know the sample proportion differs from the national level. 5% is used for significance. Give the Ho and Ha. The appropriate test. Decision rule. Test calculations. Conclusion with comparison to alpha or critical value. I think this is a two tailed test. Use a one sample t- test. I think the null is rejected. t (40-1) = (400-35) / (.05 divided by sqrt 31) This is where I get stuck.
Seven acute schizophrenics and 10 chronic schizophrenics have been measured on a clarity of thinking scale. The mean for the acute sample was 52, with s = 12, and the mean for the chronic sample was 44, with s = 11. Perform a pooled-variance t test with alpha = .05 (two-tailed), and state your statistical conclusion.
A data set lists earthquake depths. The summary statistics are n 600, x 4.73 km, s 4.39 km. Use a 0.01 significance level to test the claim of a seismologist that these earthquakes are from a population with a mean equal to 4.00. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses? O A. Ho: =4.00 km H1:#4.00 km O B. Ho: =4.00 km H4u4.00 km O D. Ho u#4.00 km H1:=4.00 km Determine the test statistic. (Round to two decimal places as needed.) Determine the P-value. (Round to three decimal places as needed.) State the final conclusion that addresses the original claim. correct. V Ho. There is V evidence to conclude that the original claim that the mean of the population of earthquake depths is 4.00 km Reject Fail to reject
identify the test statistic. Identify the P-value.
A data set includes data from student evaluations of courses. The summary statistics are n=97, x=3.44, s=0.61. Use a 0.05 significance level to test the claim that the population of student course evaluations has a mean equal to 3.50. Assume that a simple random sample has been selected. Identify the null and alternativehypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses? A. H0: μ=3.50 H1: μ≠3.50 B. H0: μ=3.50 H1: μ>3.50 C. H0: μ=3.50 H1: μ<3.50 D. H0: μ≠3.50 H1: μ=3.50 Determine the test statistic. nothing (Round to two decimal places as needed.) Determine the P-value. nothing (Round to three decimal places as needed.) State the final conclusion that addresses the original claim. ▼ Fail to reject Reject H0. There is ▼ sufficient not sufficient evidence to conclude that the mean…
According to the Statistical Abstract of the United States, the mean family size in 2010 was 3.14 persons. Suppose a random sample of 225 families taken this year yields a sample mean size of 3.05 persons, and suppose we assume the population standard deviation of family sizes is o = 1 person. Using a 5% significance level, test the hypothesis that the mean family size has decreased since 2010. Perform your hypothesis test, and select the best interpretation of your results from the choices below. Select one: O a. At the 5% level of significance the data are statistically significant. We cannot determine the average family size has decreased since 2010. O b. At the 5% level of significance the data are statisticall significant. We can determine the average family size has decreased since 2010. O c. At the 5% level of significance the data is not statistically significant. We cannot conclude the average family size has decreased since 2010. O d. At the 5% level of significance the data…
A data set includes data from 400 random tornadoes. The display from the technology available below results from using the tornado lengths (miles) to test the claim that the mean tornado length is greater than 2.5 miles. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the test statistic and P-value?
please help me dtermine the test statistic AND P-value?
A data set lists earthquake depths. The summary statistics are n 600, x 4.73 km, s 4.39 km. Use a 0.01 significance level to test the claim of a seismologist that these earthquakes are from a population with a mean equal to 4.00. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses? OA. Ho:u=4.00 km H1:H#4.00 km O B. Ho: =4.00 km HiiH4.00 km OD. Ho: u#4.00 km H: =4.00 km Determine the test statistic. (Round to two decimal places as needed.) Determine the P-value. (Round to three decimal places as needed.) State the final conclusion that addresses the original claim. V Ho. There is V evidence to conclude that the original claim that the mean of the population of earthquake depths is 4.00 km correct. Reject Fail to reject Click to select your answer(s). esc #3 $ 2. R T tab K G H. F caps lock Σ D.
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A data set includes data from 400 random tornadoes. The display from technology available below results from using the tornado lengths (miles) to test the claim that the mean tornado length is greater than 2.8 miles. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. LOADING... Click the icon to view the display from technology. Question content area bottom Part 1 Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses? A. H0: μ<2.8 miles H1: μ=2.8 miles B. H0: μ=2.8 miles H1: μ<2.8 miles C. H0: μ=2.8 miles H1: μ>2.8 miles Your answer is correct. D. H0: μ=2.8 miles H1: μ≠2.8 miles Part 2 Identify the test statistic.

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