The sample of individual students' test scores was drawn from the total number of students taking thecourse the 'Theory and Practice of Peace and Conflict' (3credit hour per week) in the academic year2014 second semester. Their test scores were recorded and shown in the following table.Student123456789101112131415Marks23.012.015.015.024.026.517.027.034.524.521.59.5016.530.027.0Student161718192021222324252627282930Marks9.5015.512.525.010.039.030.035.536.032.538.537.035.529.537.0a) Use any statistical software to generate the descriptive statistics for the above data. The statisticsgenerated should include the values of sample mean, sample standard deviation, and sample size.b) Construct the 95% confidence interval for the population mean and interpret the interval. Basedon the interval, explain the result.c) Construct the 95% confidence interval for the population standard deviation and interpret theinterval. Based on the interval, explain the result.d) Use p-value to test whether the population mean of students' test scores is greater than 20 at a0.05. You should include a statistical output in your answer.

Student Marks 1 23 2 12 3 15 4 15 5 24 6 26.5 7 17 8 27 9 34.5 10 24.5 11 21.5…

Answered: The sample of individual students' test…

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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i already did multiple choice just find the test statistic
Below is the summary A tutorial school has been running IELTS mock examination for many years. presented by the tutorial school related to the IELTS mock examination in one of the many online classes selected randomly in year 2022. IELTS score in mock examination Number of students <4 5 2 5 7 15 8 10 3 A report presented by this tutorial school 5 years ago indicated that the population mean score of IELTS mock examination was 7.05 points and ihe population proportion of students got 7 points or above was 0.67. (a) Construct a 95% confidence interval estimate of population mean score a student get in the IELTS mock examination in 2022. (b) Test, at 1% level of significance, if the population proportion of students get 7 points or above in 2022 is higher than that in year 2017. (The report must include the (i) null hypothesis and alternative hypothesis, (ii) rejection region(s), (iii) calculation of test statistics, and (iv) conclusion.) (c) If the confidence interval estimate in part…
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The human resource manager of company wanted to know how the Performance of the workers depend on Environment, Value, Motivation and Remuneration. He selected 100 workers randomly and used a questionnaire to obtain the scores on their perceived Environment, Value, Motivation and Remuneration. The final score on each variable ranged from 1 to 10, where a high score is supposed to be associated with high performance. In the study, the key performance index (KPI) was used as the indicator of worker performance. The following are some of the outputs from SPSS. a) Write the linear regression equation of Performance upon Environment, Value, Motivation and Remuneration. b) Interpret the coefficients for Environment in the regression equation in (a). c) Test if there is a problem of multicollinearity
Flag Based on samples of 20 medical doctors, each handling 100 patient cards, shown a number of mistakes in patient cards files 220 (for doctors and files) Which Type of Control Chart would best represent the data, along with its central line and Process capability and control limits
Suppose that a health researcher is interested in determining whether the distance between the patient’s residence and source of care, and # of disability days significantly predict the number of visits at a local hospital. At the 5% significance level, determine if # of disability days and distance between patient’s residence and source of care significantly predict the number of visits. Visits Distance Disability days 7 1 8 7 1 9 2 10 1 4 4 3 5 2 5 3 9 2 2 10 1 9 2 10 6 3 7 2 11 2 4 2 3 7 2 8 3 14 2 2 16 1 8 2 9 4 4 2 6 2 5
A study was conducted to examine how anxiety (measured on a metric scale) varies for people from different age groups (<18 years, 19 - 29 years, 30 - 39 years, 40+ years). It was hypothesised that people <18 years old would have the least anxiety of the four age groups. It was also hypothesised that people 40+ years old would have more anxiety than people 19-29 years old. Which of the following would be an appropriate statistical test to conduct, which addresses these hypotheses? Group of answer choices: Factorial ANOVA Multiple Regression Mixed ANOVA Single factor ANOVA Within Subjects ANOVA
I wanted to test if the mean Exam 3 score in this course was different than the mean Exam 2 score. I then did a different test than the previous questions. I instead used the 30 students in my course last semester as my sample for Exam 3, and I used a sample of 25 students from this class as my sample for Exam 2. The sample mean score for Exam 2 was 84.0 with a standard deviation of 2.0, and the sample mean score for Exam 3 was 82.0 with a standard deviation of 1.8. What is the t-value used in the 95% confidence interval for the mean difference between Exam 2 and Exam 3? Group of answer choices 2.045 2.064 2.042 2.060
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determine the degrees of freedom on letter b, thank you !! <3
The local pilots association examined records from this year's census of its members. Ivanna is a member, and the census shows that she has 3105 hours of Flight experience. After the census, the association found that its members had a mean of 4575 hours of flight experience with a standard deviation of 692 hours. (a) Find the -score of Ivanna's flight experience relative to the flight exper ences of all the members of the pilots association. Round your answer to two decimal places. (b) Fill in the blanks to Interpret the -score of Ivanna's flight experience. Make sure to express your answer in terms of a positive number of standard deviations. Ivanna's flight experience is standard deviations (Choose one) the mean flight experience of all the members of the pllots association. above below

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