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10. In a certain senior high school, a study found that 972 out that 1,100 Grade 12 students use smartphones. Using a = 0.10 level, is there enough evidence to conclude that the percentage of students who are using smartphones is different from 25%? What is the appropriate alternative hypothesis? А. Ha: p > .25 С. На р-.25 В. Ha p<.25 D. Ha ри.25 11. In problem no. 10, what type of test is used? C. one-tailed test А. directional В. one-sided test D. non-directional 12. The president of a certain food chain claims that 70% of his 20,000 customers are very satisfied with the service they receive. In order to test the claim, a survey was conducted among 100 customers randomly chosen. Among them, 90% said that they are satisfied. Is there enough evidence to say that 70% of the customers are satisfied at 0.05 level of significance? Formulate the null hypothesis. А. На: р*0.7о В. На: р- 0.7о С. На: р<0.70 D. H: р> 0.70 13. In problem no. 12, what is its alternative hypothesis? С. На: р- 0.70 D. Ha: р> 0.7о А. Ha: p# 0.70 В. Ha: p < 0.70 14. Suppose a TV network claims that at least 6% of their 15,000 employees are living in a condominium unit in the city. A survey was conducted randomly among 500 employees. Assume a significance level of 0.05. What is the appropriate alternative hypothesis of this study? С. На: р<0.06 D. H.: р-0.06 А. Ha: p+ 0.06 В. Hạ: p > 0. 06 15. In problem no. 14, what specific type of test is applied? A. directional B. left-tailed test C. one-tailed test D. non-directional

10. In a certain senior high school, a study found that 972 out that 1,100 Grade 12 students use smartphones. Using a = 0.10 level, is there enough evidence to conclude that the percentage of students who are using smartphones is different from 25%? What is the appropriate alternative hypothesis? А. Ha: p > .25 С. На р-.25 В. Ha p<.25 D. Ha ри.25 11. In problem no. 10, what type of test is used? C. one-tailed test А. directional В. one-sided test D. non-directional 12. The president of a certain food chain claims that 70% of his 20,000 customers are very satisfied with the service they receive. In order to test the claim, a survey was conducted among 100 customers randomly chosen. Among them, 90% said that they are satisfied. Is there enough evidence to say that 70% of the customers are satisfied at 0.05 level of significance? Formulate the null hypothesis. А. На: р*0.7о В. На: р- 0.7о С. На: р<0.70 D. H: р> 0.70 13. In problem no. 12, what is its alternative hypothesis? С. На: р- 0.70 D. Ha: р> 0.7о А. Ha: p# 0.70 В. Ha: p < 0.70 14. Suppose a TV network claims that at least 6% of their 15,000 employees are living in a condominium unit in the city. A survey was conducted randomly among 500 employees. Assume a significance level of 0.05. What is the appropriate alternative hypothesis of this study? С. На: р<0.06 D. H.: р-0.06 А. Ha: p+ 0.06 В. Hạ: p > 0. 06 15. In problem no. 14, what specific type of test is applied? A. directional B. left-tailed test C. one-tailed test D. non-directional

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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10. In a certain senior high school, a study found that 972 out that 1,100 Grade 12 students use smartphones. Using a = 0.10 level, is there enough evidence to conclude that the percentage of students who are using smartphones is different from 25%? What is the appropriate alternative hypothesis? А. Ha: p > .25 С. На р%3.25 В. Ha: p< .25 D. Ha: p + .25 11. In problem no. 10, what type of test is used? C. one-tailed test А. directional B. one-sided test D. non-directional 12. The president of a certain food chain claims that 70% of his 20,000 customers are very satisfied with the service they receive. In order to test the claim, a survey was conducted among 100 customers randomly chosen. Among them, 90% said that they are satisfied. Is there enough evidence to say that 70% of the customers are satisfied at 0.05 level of significance? Formulate the null hypothesis. A. Ho: p+ 0.70 В. Но: р- 0.70 С. Н.: р<0.70 D. Ho: р> 0.70 13. In problem no. 12, what is its alternative hypothesis? С. На: р 3 0.70 D. Ha: р> 0.7о Ha: p + 0.70 В. Ha: p < 0.70 А. 14. Suppose a TV network claims that at least 6% of their 15,000 employees are living in a condominium unit in the city. A survey was conducted randomly among 500 employees. Assume a significance level of 0.05. What is the appropriate alternative hypothesis of this study? С. На: р < 0. 06 D. Ho: р-D 0. 06 A. Ha: p+ 0.06 В. На: р» 0. 06 15. In problem no. 14, what specific type of test is applied? A. directional C. one-tailed test B. left-tailed test D. non-directional
Transcribed Image Text:10. In a certain senior high school, a study found that 972 out that 1,100 Grade 12 students use smartphones. Using a = 0.10 level, is there enough evidence to conclude that the percentage of students who are using smartphones is different from 25%? What is the appropriate alternative hypothesis? А. Ha: p > .25 С. На р%3.25 В. Ha: p< .25 D. Ha: p + .25 11. In problem no. 10, what type of test is used? C. one-tailed test А. directional B. one-sided test D. non-directional 12. The president of a certain food chain claims that 70% of his 20,000 customers are very satisfied with the service they receive. In order to test the claim, a survey was conducted among 100 customers randomly chosen. Among them, 90% said that they are satisfied. Is there enough evidence to say that 70% of the customers are satisfied at 0.05 level of significance? Formulate the null hypothesis. A. Ho: p+ 0.70 В. Но: р- 0.70 С. Н.: р<0.70 D. Ho: р> 0.70 13. In problem no. 12, what is its alternative hypothesis? С. На: р 3 0.70 D. Ha: р> 0.7о Ha: p + 0.70 В. Ha: p < 0.70 А. 14. Suppose a TV network claims that at least 6% of their 15,000 employees are living in a condominium unit in the city. A survey was conducted randomly among 500 employees. Assume a significance level of 0.05. What is the appropriate alternative hypothesis of this study? С. На: р < 0. 06 D. Ho: р-D 0. 06 A. Ha: p+ 0.06 В. На: р» 0. 06 15. In problem no. 14, what specific type of test is applied? A. directional C. one-tailed test B. left-tailed test D. non-directional
It is a part of the sample with a particular trait expressed in decimal, percent, or fraction. A. sample 1. C. sample proportion B. population D. population proportion 2. It is the symbol used to represent the size of the samples. С. р В. р А. п D. x What is the sample proportion if n = 740 and x = A. 0.35 3. 259? В. О.50 C. 0.56 D. 0.65 In a study about household income conducted in a small town, it was found out that 7% of all families in the town earn less than P4,000 per month. Out of 64 families who were randomly selected, 10 families earn less than P4,000 per month. Is the sample large enough to use the Central Limit 4. Theorem? A. No, because 10/64 < 5 C. Yes, because 64>30 B. No, because 64(0.07) < 5 D. Yes, because 64(0.93)>5 In testing hypothesis involving population proportion, when do we say that the sample size (n) is sufficiently large to use 5. the Central Limit Theorem? A. if n>30 B. if n<100 C. if np>5, nq>5 D. if n/p<5, n/q<5 6. Compute for the value of p if n = 740 and x = 259. A. 0.35 В. О.40 С. 0.52 D. 2.86 7. Which formula for the test statistic is appropriate if the Central Limit Theorem is used in testing hypothesis on population proportion? p-p В. Zom pq C. z = - HE D. z = P=P A. Zcom
Transcribed Image Text:It is a part of the sample with a particular trait expressed in decimal, percent, or fraction. A. sample 1. C. sample proportion B. population D. population proportion 2. It is the symbol used to represent the size of the samples. С. р В. р А. п D. x What is the sample proportion if n = 740 and x = A. 0.35 3. 259? В. О.50 C. 0.56 D. 0.65 In a study about household income conducted in a small town, it was found out that 7% of all families in the town earn less than P4,000 per month. Out of 64 families who were randomly selected, 10 families earn less than P4,000 per month. Is the sample large enough to use the Central Limit 4. Theorem? A. No, because 10/64 < 5 C. Yes, because 64>30 B. No, because 64(0.07) < 5 D. Yes, because 64(0.93)>5 In testing hypothesis involving population proportion, when do we say that the sample size (n) is sufficiently large to use 5. the Central Limit Theorem? A. if n>30 B. if n<100 C. if np>5, nq>5 D. if n/p<5, n/q<5 6. Compute for the value of p if n = 740 and x = 259. A. 0.35 В. О.40 С. 0.52 D. 2.86 7. Which formula for the test statistic is appropriate if the Central Limit Theorem is used in testing hypothesis on population proportion? p-p В. Zom pq C. z = - HE D. z = P=P A. Zcom
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