MATH 225N Week 7 Assignment Developing Hypothesis and Understanding Possible Conclusions for Proportions

MATH 225N Week 7 Assignment: Developing Hypothesis and Understanding Possible Conclusions for Proportions

1. Question: A searcher claims that the incidence of a certain type of cancer is less than 5% to test this claim, a random sample of 4000 people are … and 170 are …to have the cancer. find the test statistics for the hypothesis test for the proportion round your answer to two decimal places
2. Question: A police office claim that the proportion of people wearing seat belt is less than 65% to test this claim a random sample of 200 drivers is … and is …that 126 people are wearing seat belts. find the test statistic for this hypothesis test for a proportion round your answer to two decimal places
3. Question: The owners of a Supermarket chain are looking into the effectiveness of the supermarkets loyalty card program. specifically, they would like to know if the percentage of Shoppers in their stores who use the loyalty card has …from 63 % in 2014. Chloe works in the marketing department of the chain and is …to answer the owners’ enquiry randomly selects 196 customers from various stores in the chain and find that 114 use the loyalty card what are the null and alternative hypothesis for this test hypothesis?
4. Question: Kylie works for a large nursery and is investigating whether to use a new brand of seeds. the new brand of seeds advertisers that 93% of the seeds germinate, which is higher than the germination rate of the seeds she is currently using she will change over to this new brand unless the actual germination rate is less than what is advertised. Kylie conducts experiment by randomly selecting 76 seeds of the new brand and plants them she finds that 70 of those seeds … which are the null and alternative hypothesis for this hypothesis test
   

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MATH 225N Week 7 Assignment: Developing Hypothesis and Understanding Possible Conclusions for Proportions

1. Question: A hospital administrator claims that the proportion of knee surgeries that are successful is 87%. To test this claim, a random sample of 450 patients who underwent knee surgery is … and it is … that 371of these patients had a successful knee surgery operation.
2. Question: A local cable company claims that the proportion of people who have Internet access is less than 63%. To test this claim, a random sample of 800 people is … that 454 people have Internet access.
3. Question: An airline company claims in a recent advertisement that more than 94% of passenger luggage that it lost is … with the customer within 1 Hunter is a graduate student studying statistics. For a research project, Hunter wants to find out whether there is convincing evidence in support of the airline company’s claim. He randomly selects 315 passengers of the airline whose luggage was lost by the airline and found that 276 of those passengers were … with their luggage within 1day. Are all of the conditions for this hypothesis test met, and if so, what are the null and alternative hypotheses for this hypo thesis test?
4. Question: Devin is a researcher for a pharmaceutical company testing whether a new prescription pain medication causes patients to develop nausea. The medication would have to … if more than 6% of patients who take the medication develop nausea on a regular basis. Devin randomly …  461 patients for a clinical trial of the medication and found that 27 of the patients … nausea on a regular basis. What are the null and alternative hypotheses for this hypothesis test?
5. Question: A researcher claims that the proportion of college students who plan to participate in community service after graduation is greater than 35%. To test this claim, a survey … 500randomly … college students if they planned to perform community service after graduation. Of those students, 195 … to perform community service.
6. Question: A college professor claims that the proportion of students passing a statistics course is 80%. To test this claim, a random sample of 250 students who previously took the course is … that 221 students … the course.
7. Question: A politician recently made the claim that 47%of taxpayers from a certain region do not pay any income taxes. Makayla is a journalist for an online media company and is testing the politician’s claim for an op-ed. She randomly selects 159 .pay any income taxes. What are the null and alternative hypotheses for this hypothesis test?
8. Question: Colin is a student in a statistics course looking to show whether the proportion of games … that are won by the visiting team in a certain professional lacrosse league is 50%. Colin randomly selects 83 games from the past few seasons and finds that 37of the games were won by the visiting team. What are the null and alternative hypotheses for this hypothesis test?
   

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MATH 225N Week 7 Assignment: Developing Hypothesis and Understanding Possible Conclusions for Proportions

1. Question: Devin is a researcher for a pharmaceutical company testing whether a new prescription pain medication causes patients to develop nausea. The medication would have to … if more than 6% of patients who take the medication develop nausea on a regular basis. Devin randomly … 461 patients for a clinical trial of the medication and found that 27 of the patients … nausea on a regular basis. What are the null and alternative hypotheses for this hypothesis test?
2. Question: A college professor claims that the proportion of students passing a statistics course is 80%. To test this claim, a random sample of 250 students who previously took the course is … that 221 students … the course. The following is the setup for this hypothesis test: H0:p = 0.80 Ha:p ≠80    Find the test statistic for this hypothesis test for a proportion and round your answer to 2 decimal places.
3. Question: Charlotte is a high school student who read an article that … only 46% of teens ages 16 to 18 have a driver’s license. She claims that the percentage is greater for the students at her school. Charlotte randomly selects 126 students ages 16 to 18 at her school and … whether they have a driver’s license. She … that 67 of those … had a driver’s license. What are the null and alternative hypotheses for this hypothesis test?
4. Question: A local cable company claims that the proportion of people who have Internet access is less than 63%. To test this claim, a random sample of 800 people is … that 454 people have Internet access. The following is the setup for this hypothesis test: {H0:p=0.63Ha:p<0.63 Find the test statistic for this hypothesis test for a proportion. Round your answer to 2 decimal places.
5. Question: Colin is a student in a statistics course looking to show whether the proportion of games … that are won by the visiting team in a certain professional lacrosse league is 50%. Colin randomly selects 83 games from the past few seasons and finds that 37 of the games were won by the visiting team. What are the null and alternative hypotheses for this hypothesis test?
6. Question: A former residential complex was found to be a … with several hazardous materials. Tamela is an investigative journalist who would like to show whether the proportion of the residents of the complex who eventually … from cancer is greater than the regional average of 14%. She randomly selects 54 residents who … in the complex and finds that 12 of those residents eventually … from cancer. Are all of the conditions for this hypothesis test met, and if so, what are the null and alternative hypotheses for this hypothesis test?
7. Question: Abigail, who works for a region’s department of health, is looking for evidence that the percentage of adults in the region who are current smokers has … from 8% in 2015. She gathers a random sample of adults in the region and asks each individual if he or she currently smokes. Abigail found that 40 of the 277 adults who were … are current smokers. What are the null and alternative hypotheses for this hypothesis test?
8. Question: Olivia is a writer for a local travel magazine and is looking into delays of flight departures. She is investigating whether the proportion of departures that are … at the local airport is less than the national average of 5%. She randomly selects 254 departures that … at the airport over a period of several months and found that 46 of the flights were … Are all of the conditions for this hypothesis test met, and if so, what are the null and alternative hypotheses for this hypothesis test?
9. Question: A human resources representative claims that the proportion of employees earning more than $50,000 is less than 40%. To test this claim, a random sample of 700 employees is … and 305 employees are … to earn more than $50,000. The following is the setup for this hypothesis test:
10. Question: A business owner claims that the proportion of online orders is greater than 75%. To test this claim, the owner checks the next 1000 orders and determines that 700 orders are online orders. The following is the setup for this hypothesis test: H0:p=0.75 Ha:p>0.75    Find the test statistic for this hypothesis test for a proportion and round your answer to 2 decimal places.
11. Question: Laura … a coin 64 times and … 28 To determine if these results suggest that the coin is … against heads, she … the following hypothesis test: H0:p=0.5 Ha:p<0.5    α=0.10     Calculate the test statistic for this hypothesis test (round your answer to 2 decimal places)
12. Question: A medical researcher claims that the proportion of people taking a certain medication that develop serious side effects is 12%. To test this claim, a random sample of 900 people taking the medication is … and it is … that 93 people have … serious side effects. The following is the setup for this hypothesis test: {H0:p=0.12Ha:p≠0.12   Find the test statistic for this hypothesis test for a proportion. Round your final answer to 2 decimal places.
13. Question: A college administrator claims that the proportion of students that are female is greater than 62%. To test this claim, a random sample of 300 students is … that 213 students are female. The following is the setup for this hypothesis test: Find the test statistic for this hypothesis test for a proportion. Round your answer to 2 decimal places.
14. Question: Caleb is a campaign manager for a governor. He is looking into whether the governor’s job approval rating among … voters has … from 54% in order to provide him with additional information to prepare for the upcoming election. Caleb randomly selects 424 … voters in the state to ask them if they approve of the governor’s job and finds that 237 of the voters in the sample … with “Yes.” Are all of the conditions for this hypothesis test met, and if so, what are the null and alternative hypotheses for this hypothesis test?
15. Question: Tristan is an administrator for a private nonprofit college and read a surprising statistic that 74% of graduates from private nonprofit colleges in the region had at least one outstanding student loan at the time of graduation. He believes that percentage is high and claims that the proportion of graduates at his college is less than the regional rate. Tristan randomly selects 135 graduates from his college and finds that 92 had at least one outstanding student loan at the time of graduation. What are the null and alternative hypotheses for this hypothesis test?
16. Question: The owners of a supermarket chain are looking into the effectiveness of the supermarket’s loyalty card program. Specifically, they would like to know if the percentage of shoppers in their stores who use the loyalty card has … from 63% in 2014. Chloe works in the marketing department of the chain and is … to answer the owners’ inquiry. She randomly selects 196 customers from various stores in the chain and finds that 114 use the loyalty card. What are the null and alternative hypotheses for this hypothesis test?
17. Question: Kylie works for a large nursery and is investigating whether to use a new brand of seeds. The new brand of seeds advertises that 93% of the seeds germinate, which is higher than the germination rate of the seeds she is currently using. She will change over to this new brand unless the actual germination rate is less than what is … Kylie conducts an experiment by randomly selecting 76 seeds of the new brand and plants them. She finds that 70 of those seeds … What are the null and alternative hypotheses for this hypothesis test?
18. Question: Jordan is the provost of a university and is looking into whether the 6-year graduation rate of freshmen in the class of 2016 at his university has … from 59% for the class of 2011. He surveys a random sample of 82 students who were freshmen in the class of 2016 and … that 51 of those students … from the university within 6 What are the null and alternative hypotheses for this hypothesis test?
19. Question: A police officer claims that the proportion of accidents that occur in the daytime (versus nighttime) at a certain intersection is 35%. To test this claim, a random sample of 500 accidents at this intersection was … from police records it is …that 156 accidents … in the daytime. The following is the setup for this hypothesis test: Find the test statistic for this hypothesis test for a proportion. Round your answer to 2 decimal places.