Compute the sampling distribution for two tosses of an unfair coi
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Compute the sampling distribution for two tosses of an unfair coin.
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- A surveyor is determined to sample homeowners in south Philadelphia before the next local election in order to assess key issues that people want to see changes for this year. Suppose the surveyor decides that he will first collect a list of eligible voters from the county, and separate that list into four groups based on annual income. Then, the surveyor randomly assigns each household a number 01-10 within each group of income. The surveyor will select 4 households from each income group using the following random number table. Once 4 households are selected for one group, the surveyor would continue with the next on the same line of the table. 081203 071072 058436 080695 010354 080951 213607 041573 083947 101503 785409 A) What kind of sampling strategy is this? B) Which households would be selected for each income group from this table?determine what type of sampling technique is used (Simple Random Sampling, Stratified Random Sampling, Systematic Sampling, Cluster Sampling, or Convenience Sampling). 5. A researcher wants to select ten students for a survey. Each student’s name is placed in a hat and 10 names are selected.8. The local florist serves 24 schools. The owner wants to interview a sample of 4 principals in detail to find ways to improve services to his/her clients. To avoid bias, the owner chooses a simple random sample size 4. Briefly explain how you could choose a simple random sample. Give an example.
- A small company is interested in determining how many of its employees are still paying off student loans. However, the company doesn't want to allocate the resources required to survey every single employee. So they decide to randomly sample 2 individuals from each department using a simple random sample approach. There are a total of 6 individuals that work in the human resources department. How many possible distinct combinations of 2 individuals could be selected from the human resources department?A worker wants to determine the average weight of fish fillets in his freezer. There are hundreds of boxes of fillets in the freezer with each box containing 15 fillets. He randomly selects 10 boxes of fish at random and pools all fillets in the 10 chosen boxes together as his sample. Is this simple random sampling, stratified sampling, or cluster sampling?When the Bureau of Labor Statistics conducts a survey, it begins by partitioning the United States adult population into 2,0072,007 groups called primary sampling units. Assume that these primary sampling units all contain the same number of adults. If you randomly select one adult from each primary sampling unit, is the result a simple random sample. Why or why not?
- To get a sample of 50 students for a student services survey, an assistant principal uses the calculator command "randInt(1,72,5)" to pick five numbers between 1 and 72. He goes to those five pages in the 72-page directory and chooses the ten students pictured on each of those five pages. Will this sampling strategy result in a random sample from the population under consideration?A researcher wants to survey 2000 Americans for an obesity study. Match the strategies to their corresponding sampling techniques. The researcher posts the survey on the Internet the survey question and waits until 2000 people have responded. The researcher picks 20 different small groups:a church group a Democrat club a student club etc. each containing 100 people. Then the researcher makes sure that everyone from each group answers the survey question. The researcher gets the complete list from the Census Bureau and surveys every 1500th person on the list. The researcher makes sure that the proportion of respondents from each state matches the proportion of each state's population to the US population. The researcher gets the complete list from the Census Bureau and uses a computer to randomly select 2000 people. Stratified Sampling Systematic Sampling Cluster Sampling Convenience Sampling Simple Random Samplingwhen a single die is thrown, it has 6 outcomes since it has 6 faces. what is the sample space ?
- The California State University (CSU) system consists of 23 campuses, from San Diego State in the south to Humboldt State near the Oregon border. A CSU administrator wishes to make an inference about the average distance between the hometowns of students and their campuses. Describe and discuss several different sampling methods that might be employed. (Select all that apply.) One could take a simple random sample of students from all students in the California State University system and ask each student in the sample to report the distance from their hometown to campus. The sample could be generated by taking a stratified random sample by taking a simple random sample from each of the 23 campuses and again asking each student in the sample to report the distance from their hometown to campus. Certain problems arise with self reporting of distances, such as recording error or poor recall. There are no potential problems with self reporting of distances. Instead of taking a random…A questionnaire is sent to every ninth person on an alphabetical list of a store’s credit card customers. The first person chosen from the list is picked randomly. Which sampling method is being used?Suppose you are the president of the student government. You wish to conduct a survey to determine the student body's opinion regarding student services. The administration provides you with a list of the names and phone numbers of the 775 registered students. (a) Discuss a procedure you could follow to obtain a simple random sample of 5 students. (b) Obtain this sample. Click the icon to view the portion of the random number table. (a) Which of the following procedures could you follow to obtain a simple random sample of 5 students? Select all that apply. A. List the names in alphabetical order and take the first five names on the list. B. List each name on a separate piece of paper; place them all in a hat, and pick five. C. Ask the students to come to a meeting and pick five from those who come to the meeting. D. Number the names from 1 to 775 and use a random number table to produce 5 different three-digit numbers corresponding to the names selected. *** C (b) Obtain this sample…
