Questions 1-14. The results of a recent poll ol th shown below Product Shoppers Serveyed Shoppers Favring Th Preduct 544 603 s00 2. 900 11. Based on the information above, the point estimate for the difference between the twe proportions in favor of this product is
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- Question 4 a The researcher is concerned that older persons may not be knowledgeable of the COFLU-20. Assuch, he is interested in investigating the association between the age of the respondents and theirknowledge level. Table 2 below shows the knowledge level of respondents, by age group.Table 2Age Group Knowledge Level TotalPoor Satisfactory Good18 - 25 33 16 13 6226 - 34 30 18 12 6035 - 44 29 14 12 5545 - 54 36 16 18 7055 - 75 17 14 22 53Total 145 78 77 300 Conduct a test, at the 5% level of significance, to determine whether the data provided sufficientevidence to conclude that an association exists between age group and knowledge level. (i) State the hypotheses to be tested:H0:H1: Calculate:(ii) state the degrees of freedom for this test (iii) the p-value for this test, given that the chi-square test statistic, x2, is 11.029. (iv) state the conclusion for the test. Give reason for your answer.QUESTION 4(a) The researcher is concerned that older persons may not be knowledgeable of the COFLU-20. Assuch, he is interested in investigating the association between the age of the respondents and theirknowledge level. Table 2 below shows the knowledge level of respondents, by age group.Table 2Age Group Knowledge Level TotalPoor Satisfactory Good18 - 25 33 16 13 6226 - 34 30 18 12 6035 - 44 29 14 12 5545 - 54 36 16 18 7055 - 75 17 14 22 53Total 145 78 77 300Conduct a test, at the 5% level of significance, to determine whether the data provided sufficientevidence to conclude that an association exists between age group and knowledge level.(i) State the hypotheses to be tested:H0:H1: [Calculate:(ii) state the degrees of freedom for this test (iii) the p-value for this test, given that the chi-square test statistic, 2, is 11.029.(iv) state the conclusion for the test. Give reason for your answer.continueQUESTION 4(a) The researcher is concerned that older persons may not be knowledgeable of the COFLU-20. Assuch, he is interested in investigating the association between the age of the respondents and theirknowledge level. Table 2 below shows the knowledge level of respondents, by age group.Table 2Age Group Knowledge Level TotalPoor Satisfactory Good18 - 25 33 16 13 6226 - 34 30 18 12 6035 - 44 29 14 12 5545 - 54 36 16 18 7055 - 75 17 14 22 53Total 145 78 77 300Conduct a test, at the 5% level of significance, to determine whether the data provided sufficientevidence to conclude that an association exists between age group and knowledge level.(i) State the hypotheses to be tested:H0:H1: Calculate:(ii) state the degrees of freedom for this test (iii) the p-value for this test, given that the chi-square test statistic, 2, is 11.029.(iv) state the conclusion for the test. Give reason for your answer.
- Item 9 At a research facility that designs rocket engines, researchers know that some engines fail to ignite as a result of fuel system error. From a random sample of 40 engines of one design, 14 failed to ignite as a result of fuel system error. From a random sample of 30 engines of a second design, 9 failed to ignite as a result of fuel system error. The researchers want to estimate the difference in the proportion of engine failures for the two designs. Which of the following is the most appropriate method to create the estimate? A one-sample z-interval for a sample proportion A A one-sample z-interval for a population proportion B A two-sample z-interval for a population proportion C A two-sample z-interval for a difference in sample proportions D A two-sample z-interval for a difference in population proportionsquestion 8 a recent survey releved that 54% of 18 to 34 year old , 33% of 35 to 54 year old and 15% those ages 55+ use youtube to listen to music . if 10 people ages 55+ are randomly selected find the probablitity that at most 1 use youtube to listen to music?Question 5For each of the following tobs values, determine the highest level of significance associated with the decision taken. *NB:* Please show working tobs df Decision (iv) -1.586 60 Reject Ha for a one-tailed test
- Question 5For each of the following tobs values, determine the highest level of significance associated with the decision taken. tobs df Decision (i) 4.000 17 Reject Ha for a two-tailed test (ii) 1.200 120 Reject Ha for a one-tailed test (iii) -2.660 16 Reject Ha for both one-tailed and two-tailed test (iv) -1.586 60 Reject Ha for a one-tailed testQuestion(13): The researcher decided to conduct the study again and selected an additional 10 children from the full time kindergarden and an additional 10 children from partime kindergarden.This time they matched the children in full time and part time based on SES, gender, age and vocabulary scores. They based their hypotheses on the finding from a previous study and wanted to see if children who attended full time kindergarden would have better short term memory recall comparred to children who attended partime kindergarden. Researcher read a list of 20 words then waited for two minutes, as the children had snacks, then ask then to tell them as many words as the could from the list of 20 words. Those who remember got a score of 1. Here is a summary of the result. full time kindergarden: 15 9 10 8 11 7 14 12 11 13 part time kindergarden: 10 7 9 8 12 6 8 10 7 9 Test the hypothses at (alpha…Questions 8-9, use the same information below. A marketing researcher wishes to determine if over 60% of the wine drinkers prefer a certain brand of wine or not. The marketing researcher selects a random sample of size 900 and finds that 558 of them prefer this brand of wine. Question 8. The p-value is closest to Group of answer choices 0.0132 0.001 0.05 0.1112 0.0921 Questions 8-9, use the same information below. A marketing researcher wishes to determine if over 60% of the wine drinkers prefer a certain brand of wine or not. The marketing researcher selects a random sample of size 900 and finds that 558 of them prefer this brand of wine. Question 9. At a 5% signficance level, the sample evidence Group of answer choices does not support the statement that over 60% of the wine drinkers prefer this brand of wine. cannot lead to a conclusion. supports the statement that over 60% of the wine drinkers prefer this brand of wine.
- QUESTION 1 Use the following description for Questions 1-3.A consumer products company uses direct mail marketing for its advertising campaigns. The company has three different designs (1, 2, and 3) for a new brochure designed for customers in four regions (NE = north east, NW = north west, SE = south east, and SW = south west). The company decides to test the design types by mailing samples of each design to potential customers in each region. They repeat the direct mailing campaign 3 times for each design type and region combination and record the number of responses they receive (denoted as Response). The company wonders if the design type and region have an impact on the number of responses they get. Question 1)What type of statistical model would you use to test if the design type and region have an impact on the number of survey responses? A.) Two sample z test B.) Two sample t test C.) One-way ANOVA D.) Two-way ANOVA 2. What…QUESTION 1 Use the following description for Questions 1-3.A consumer products company uses direct mail marketing for its advertising campaigns. The company has three different designs (1, 2, and 3) for a new brochure designed for customers in four regions (NE = north east, NW = north west, SE = south east, and SW = south west). The company decides to test the design types by mailing samples of each design to potential customers in each region. They repeat the direct mailing campaign 3 times for each design type and region combination and record the number of responses they receive (denoted as Response). The company wonders if the design type and region have an impact on the number of responses they get. Question 1)What type of statistical model would you use to test if the design type and region have an impact on the number of survey responses? A Two sample z test B Two sample t test C One-way ANOVA D Two-way ANOVA QUESTION 2…QUESTION 8 Rocky Mountain National Park is a popular park for outdoor recreation activities in Colorado. According to U.S. National Park Service statistics, 46.7% of visitors to Rocky Mountain National Park in 2018 entered through the Beaver Meadows park entrance, 24.3% of visitors entered through the Fall River park entrance, 6.3% of visitors entered through the Grand Lake park entrance, and 22.7% of visitors had no recorded point of entry to the park.† Consider a random sample of 175 Rocky Mountain National Park visitors. Use the normal approximation of the binomial distribution to answer the following questions. (Round your answers to four decimal places.) (a) What is the probability that at least 85 visitors had a recorded entry through the Beaver Meadows park entrance? (b) What is the probability that at least 80 but less than 90 visitors had a recorded entry through the Beaver Meadows park entrance? (c) What is the probability that fewer than 12 visitors had a…
