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Activity1: Formulate the null and alternative hypotheses. Identify whether it is one-tailed or two tailed. If the hypóthésis iš ôné-táilėd, identify its dirèction whéthér léft or right. W Note: You need to provide 3 answers (null hypothesis, alternative hypothesis, and each question. All answers for each number must be correct before you get a 3points. At least ONE incorrect answer for each number will result to a zero point. Example: 1. CVLIS claimed that there the average number of students who are willing to attend the face to face classes per section is less than15. Question # -tailed test) for Null Hypothesis (Two-tailed/ left-tailed/ nght-tailed test) Left-tailed Altemative Hypothesis 1 Ho: u= 15 or Ho: u215 Hα μ<15 1. Mr. Ariel Motas claims that his students scored an average of 98 on their Statistics and Probability Quiz. Mrs. Camitan wants to know whether the teacher's claim is acceptable or not. 2. The mean age of students in a university in the previous years was 27 years old. An instructor thinks the mean age for students is older than 27. She randomly surveys 56 stucdents and finds that the sample mean is 29 with a standard deviation of 2.

Activity1: Formulate the null and alternative hypotheses. Identify whether it is one-tailed or two tailed. If the hypóthésis iš ôné-táilėd, identify its dirèction whéthér léft or right. W Note: You need to provide 3 answers (null hypothesis, alternative hypothesis, and each question. All answers for each number must be correct before you get a 3points. At least ONE incorrect answer for each number will result to a zero point. Example: 1. CVLIS claimed that there the average number of students who are willing to attend the face to face classes per section is less than15. Question # -tailed test) for Null Hypothesis (Two-tailed/ left-tailed/ nght-tailed test) Left-tailed Altemative Hypothesis 1 Ho: u= 15 or Ho: u215 Hα μ<15 1. Mr. Ariel Motas claims that his students scored an average of 98 on their Statistics and Probability Quiz. Mrs. Camitan wants to know whether the teacher's claim is acceptable or not. 2. The mean age of students in a university in the previous years was 27 years old. An instructor thinks the mean age for students is older than 27. She randomly surveys 56 stucdents and finds that the sample mean is 29 with a standard deviation of 2.

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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Activity1: Formulate the null and alternative hypotheses. Identify whether it is one-tailed or two tailed. If the hypóthésis iš ôné-táilėd, identify its dirėction whéther léft or right. W Note: You need to provide 3 answers (null hypothesis, alternative hypothesis, and each question. All answers for each number must be correct before you get a 3points. At least ONE incorrect answer for each number will result to a zero point. Example : 1. CVLIS clainmed that there the average number of students who are willing to attend the face to face classes per section is less than15. Question # -tailed test) for (Two-tailed/ left-tailed/ nght-tailed test) Left-tailed Null Hypothesis Altemative Hypothesis Ho: u= 15 or Ho: p215 Ha u<15 Mr. Ariel Motas claims that his students scored an average of 98 on their Statistics and Probability Quiz. Mrs. Camitan wants to know whether the teacher's claim is acceptable or not. 1. 2. The mean age of students in a university in the previous years was 27 years old. An instructor thinks the mean age for students is older than 27. She randomly surveys 56 stucdents and finds that the sample mean is 29 with a standard deviation of 2. 13
Transcribed Image Text:Activity1: Formulate the null and alternative hypotheses. Identify whether it is one-tailed or two tailed. If the hypóthésis iš ôné-táilėd, identify its dirėction whéther léft or right. W Note: You need to provide 3 answers (null hypothesis, alternative hypothesis, and each question. All answers for each number must be correct before you get a 3points. At least ONE incorrect answer for each number will result to a zero point. Example : 1. CVLIS clainmed that there the average number of students who are willing to attend the face to face classes per section is less than15. Question # -tailed test) for (Two-tailed/ left-tailed/ nght-tailed test) Left-tailed Null Hypothesis Altemative Hypothesis Ho: u= 15 or Ho: p215 Ha u<15 Mr. Ariel Motas claims that his students scored an average of 98 on their Statistics and Probability Quiz. Mrs. Camitan wants to know whether the teacher's claim is acceptable or not. 1. 2. The mean age of students in a university in the previous years was 27 years old. An instructor thinks the mean age for students is older than 27. She randomly surveys 56 stucdents and finds that the sample mean is 29 with a standard deviation of 2. 13
The average salary of an engineer in the Philippines is P27,000 per rnonth. The mean work week for engineers ina new company is believed to be about 40 hours. A newly 4. 3. hired engineer hopes that it is shorter. She asks 10 engineering friends for the lengths of their mean work weeks. Based on the results, should she count orn the mean work week to be shorter than 40 hours? Mr. Vincenzo reports that an operator spends less than 5minutes in order to finish a single product. A sample of 25 operators at the Yamashita Department showed a mean of 4.3 minutes with a standard déviation of 1.6minutes. Ms. Belinda, president of GOLD Battery Manufacturer, claims that the batteries they produced last an average of at most 190hours under normal condition. Mr. Eduarte, a researcher, decided to randomly select 33 batteries from the production line and tested them. The result of his experiment shows that the tested batteries had an average life span of 160 hours with standard deviation of 35hours. 5. 6. 7. A recent survey says that Filipino children spend an average of 4hr a day playing computer games with standard deviation of 30min. A random sarnple of 9 children is taken from a normally distributed population of children who spend an average of 3.5hr playing computer games. Using the 1% level of significance, would you conclude that the statement in the survey is correct? A workout program states that there is an average weight loss of 12 pounds (Ib) for those who enrol in the program for two months. Another work out program advertises greater weight loss and was tested with a group of 30 volunteers who averaged 13lb weight loss after two months, with standard variation of 2.5lb. Does the second workout program offer a higher average weight loss effect? Test the hypothesis at a significance level of 5%. It is assumed that the mean IQ is 100. In a study conducted by a researcher, a sample of 16 people had an average of 90 with standard deviation of 15. Is the group significantly different from the regular population? Use a = 0.10. 10. A researcher wants to determine if review sessions affect the performance of students in exams. A review session is administered to a sample of 25 students and after the examination, a sample mean of 43 is calculated with a standard deviation of 8. From previous examinations, it was identified that the population mean for the same exam is 40. Can the professor conclude that the review session is effective in improving exam performance? 8. 9.
Transcribed Image Text:The average salary of an engineer in the Philippines is P27,000 per rnonth. The mean work week for engineers ina new company is believed to be about 40 hours. A newly 4. 3. hired engineer hopes that it is shorter. She asks 10 engineering friends for the lengths of their mean work weeks. Based on the results, should she count orn the mean work week to be shorter than 40 hours? Mr. Vincenzo reports that an operator spends less than 5minutes in order to finish a single product. A sample of 25 operators at the Yamashita Department showed a mean of 4.3 minutes with a standard déviation of 1.6minutes. Ms. Belinda, president of GOLD Battery Manufacturer, claims that the batteries they produced last an average of at most 190hours under normal condition. Mr. Eduarte, a researcher, decided to randomly select 33 batteries from the production line and tested them. The result of his experiment shows that the tested batteries had an average life span of 160 hours with standard deviation of 35hours. 5. 6. 7. A recent survey says that Filipino children spend an average of 4hr a day playing computer games with standard deviation of 30min. A random sarnple of 9 children is taken from a normally distributed population of children who spend an average of 3.5hr playing computer games. Using the 1% level of significance, would you conclude that the statement in the survey is correct? A workout program states that there is an average weight loss of 12 pounds (Ib) for those who enrol in the program for two months. Another work out program advertises greater weight loss and was tested with a group of 30 volunteers who averaged 13lb weight loss after two months, with standard variation of 2.5lb. Does the second workout program offer a higher average weight loss effect? Test the hypothesis at a significance level of 5%. It is assumed that the mean IQ is 100. In a study conducted by a researcher, a sample of 16 people had an average of 90 with standard deviation of 15. Is the group significantly different from the regular population? Use a = 0.10. 10. A researcher wants to determine if review sessions affect the performance of students in exams. A review session is administered to a sample of 25 students and after the examination, a sample mean of 43 is calculated with a standard deviation of 8. From previous examinations, it was identified that the population mean for the same exam is 40. Can the professor conclude that the review session is effective in improving exam performance? 8. 9.
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