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n 1point 9 A professor teaches probability and statistics using the conventional method in one of his classes. He then began to teach the course using computers and statistical software in the second class. The professor gives the same examinations to these two classes. It was observed that the students who are taught using computers and statistical software tend to get higher scores but this is not true evervtime. He decides to test this hypothesis at 1% level of signicance. From the nal exam results, he takes a random sample fro 15 students from the rst class and 10 from the second class. He gets the following results: 0 mean of 84 and standard deviation of 8 for the class using conventional method (rst class) - mean of 92 and standard deviation of 5 for the class using computer and statistical software (second class] As a student, will you agree with the professor? Assume population variances are equal g. Conclusion We cannot agree with the claim of the professor that the class using computers and statistical software performs better than class using conventional method We can agree with the claim of the professor that the class using conventional method performs better than class using computers and statistical software We cannot agree with the claim of the professor that the ciass using conventional method performs better than class using computers and statistical software We can agree with the claim of the professor that the class using computers and statistical software performs better than class using conventional method 3 1 point A professor teaches probability and statistics using the conventional method in one of his classes. He then began to teach the course using computers and statistical software in the second class. The professor gives the same examinations to these two classes. It was observed that the students who are taught using computers and statistical software tend to get higher scores but this is not true everytime. He decides to test this hypothesis at 1% level of significance. From the final exam results, he takes a random sample fro 15 students from the first class and 10 from the second class. He gets the following results: mean of 84 and standard deviation of 8 for the class using conventional method (first class) mean of 92 and standard deviation of 5 for the class using computer and statistical software (second class) As a student, will you agree with the professor? Assume population variances are equal c. Test statistic to be used O Chi-Square Z-Statistic F-Statistic O T-Statistic 4 1 point A professor teaches probability and statistics using the conventional method in one of his classes. He then began to teach the course using computers and statistical software in the second class. The professor gives the same examinations to these two classes. It was observed that the students who are taught using computers and statistical software tend to get higher scores but this is not true everytime. He decides to test this hypothesis at 1% level of significance. From the final exam results, he takes a random sample fro 15 students from the first class and 10 from the second class. He gets the following results: . mean of 84 and standard deviation of 8 for the class using conventional method (first class) . mean of 92 and standard deviation of 5 for the class using computer and statistical software (second class) As a student, will you agree with the professor? Assume population variances are equal d. Criteria for rejecting null hypothesis O Reject H. if test-statistic 1.833 Reject Ho if test-statistic 2.3267 Reject Ho if test-statistic H2 O Ho : 1 1= H 2 Ho: H 1 # H2 O Ho : H1 = H 2 Ho: H1= H2 2 1 point A professor teaches probability and statistics using the conventional method in one of his classes. He then began to teach the course using computers and statistical software in the second class. The professor gives the same examinations to these two classes. It was observed that the students who are taught using computers and statistical software tend to get higher scores but this is not true everytime. He decides to test this hypothesis at 1% level of significance. From the final exam results, he takes a random sample fro 15 students from the first class and 10 from the second class. He gets the following results: . mean of 84 and standard deviation of 8 for the class using conventional method (first class) . mean of 92 and standard deviation of 5 for the class using computer and statistical software (second class) As a student, will you agree with the professor? Assume population variances are equal b. Type of test to be used O Right-tailed Test Left-tailed Test Two-tailed Test O Insufficient amount of data