Answer 9 - 15 questions, just write the correct letter of the answer and no need to show solution. 10. In a certain senior high school, a study found that 972 out that1,100 Grade 12 students use smartphones. Using a = 0.10 level,is there enough evidence to conclude that the percentage ofstudents who are using smartphones is different from 25%? Whatis the appropriate alternative hypothesis?А.Ha: p > .25С. На р%3.25В.Ha: p< .25D. Ha: p + .2511. In problem no. 10, what type of test is used?C. one-tailed testА.directionalB. one-sided testD. non-directional12. The president of a certain food chain claims that 70% of his 20,000customers are very satisfied with the service they receive. In orderto test the claim, a survey was conducted among 100 customersrandomly chosen. Among them, 90% said that they are satisfied.Is there enough evidence to say that 70% of the customers aresatisfied at 0.05 level of significance? Formulate the nullhypothesis.A. Ho: p+ 0.70В. Но: р- 0.70С. Н.: р<0.70D. Ho: р> 0.7013. In problem no. 12, what is its alternative hypothesis?С. На: р 3 0.70D. Ha: р> 0.7оHa: p + 0.70В.Ha: p < 0.70А.14. Suppose a TV network claims that at least 6% of their 15,000employees are living in a condominium unit in the city. A surveywas conducted randomly among 500 employees. Assume asignificance level of 0.05. What is the appropriate alternativehypothesis of this study?С. На: р < 0. 06D. Ho: р-D 0. 06A. Ha: p+ 0.06В. На: р» 0. 0615. In problem no. 14, what specific type of test is applied?A. directionalC. one-tailed testB. left-tailed testD. non-directional 6. Before the opening of classes, parents were asked to answer asurvey. Those in favor of alternative learning mode were 1,900 outof 5,000 randomly selected parents. Using a = 0.10 level, is thereenough evidence to conclude that the percentage of parents whoare in favor of alternative learning mode is less than 38%? What isthe appropriate alternative hypothesis?А.На: р».38С. На: р<.38В.Ha: p = .38D. Ha: р*.387. In problem no. 6, formulate the correct null hypothesis.A. The proportion of parents who are in favor of alternativelearning mode is 38%.B. The proportion of parents who are in favor of alternativelearning mode is not equal to 38%.C. The proportion of parents who are in favor of alternativelearning mode has increased by 38%.D. The proportion of parents who are in favor of alternativelearning mode is more than 38%.8. A survey conducted last year by certain barangay officials showedthat 40% of the residents owned a private car. This year a newsurvey is conducted on 375 residents selected randomly from thesame barangay. It was found out that 190 of them own a car. Testif the claim is fewer at a = 0.01 level. Formulate the appropriatenull hypothesis.Но: р%3.40А.С. Но: р<.40В.Ha: p = .40D. Ha: р<.409. In problem #8, what is the correct alternative hypothesis insentence form?A. The proportion of residents who owned a private car is 40%.B. The proportion of residents who owned a private car is higherthan 40%.C. The proportion of residents who owned a private car haschanged to 40%.D. The proportion of residents who owned a private car is fewerthan 40%.

NOTE: As per the guidelines, we are supposed to solve the first three questions, hence I am solving…

. In a certain senior high school, a study fou 1,100 Grade 12 students use smartphones. is there enough evidence to conclude tha students who are using smartphones is diffe is the appropriate alternative hypothesis? A. Ha: p > .25 В. На р<.25 С. На р-.2 D. Ha: p+ .- . In problem no. 10, what type of test is used?

. In a certain senior high school, a study fou 1,100 Grade 12 students use smartphones. is there enough evidence to conclude tha students who are using smartphones is diffe is the appropriate alternative hypothesis? A. Ha: p > .25 В. На р<.25 С. На р-.2 D. Ha: p+ .- . In problem no. 10, what type of test is used?

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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Ashik is planning to propose to a girl he has a crush on in a grand way. He has decided to create an animation movie, conveying his love to his crush and he needs to estimate the total production time (labor-hours necessary) to produce the movie. Since he is so rich, he wants to use multiple big screens to project the movie and the mean production time for a random sample of 14 big-screen animated movie is found to be 53,500 labor-hours. Suppose that Ashik has managed to find out that the population standard deviation is 7462 labor-hours and the distribution of the production time is normal. 10 Construct a 98% confidence interval for the mean production time to produce a big-screen animated movie
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