CUNY QC Graduate student surveyed 600 parents/guardians of 2nd-grade school students in the metropolitan area. Each survey participant was shown the following statement: "Students aged 7-8 years of age be allowed to take a cell phone to school." The student summarized the responses in the table below: Strongly Agree 49 Strongly Opinion Disagree Diasgree No Location Agree Totals NY 52 27 22 29 179 NJ 94 17 3 114 CT 4 34 47 19 22 126 PA 8. 79 12 82 181 Totals 155 165 103 41 136 600
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- Question No. 4: According to the All Pakistan Software Developer Association (APSDA), developers generally spend more than 40 hours each week working on software and web development. The Table 4.1 shows the number of hours worked per week for a sample of 15 Software developers and a sample of 10 Web developers. Table 4.1 Software Developers 56 54 54 49 61 48 58 60 59 53 50 58 55 57 52 Web Developers 47 50 46 47 48 49 46 55 44 42 ---- a) What is the third quartile of spending working hours for Software developers? b) Create a box plot for the number of hours worked for Software developers. c) Create a box plot for the number of hours worked for Web developers. d) Comment on the differences between the box plots for Software & Web developers.QUESTION 1 The Ministry of Health and Social Services (MoHSS) in Namibia intends to embark upon a COVID19 vaccination campaign in the Country. But before deciding which type of COVID19 vaccine to be ordered from the Manufacturers, they first carried out a survey on some countries around the world in order to establish the most preferred vaccine. The findings revealed that: Sixty-eight (68) of them prefer the Pfizer; fifty-two (52) prefer the Moderna; and forty-eight (48) prefer the AstraZeneca. Thirty-six (36) of them prefer Pfizer and AstraZeneca; twenty-two (22) of them prefer Moderna and AstraZeneca; None of the countries prefer AstraZeneca only; 24 prefer Moderna only; 26 prefer Pfizer only; and the remaining 90 countries preferred none of the vaccines. REQUIRED: A.)How many preferred Pfizer or AstraZeneca but not Moderna? B.)What is the ratio (in the simplest form) of the countries that preferred Moderna to those that prefer Pfizer and AstraZeneca? C.)How many countries did not…Question 4a. A large accountancy firm finds that over the long run 10% of its statements for clients are in error in some way. A quality assurance officer at the firm investigating the source of the errors takes a sample of 20 statements produced by a single employee and classifies each as being “in error” or “not in error”.i. If the variable X is used to represent the number of statements in the sample that are in error, and assuming the error rate is the firm’s level of 10% then state:• the type of distribution this variable has; and• the parameter/s of this distribution. ii. Determine the probability that 2 or less returns in this sample are in error. The quality assurance officer found that there were 5 statements in the sample that were in error.iii. Determine the probability of finding 5 or more returns in error if indeed the error rate was 10%. iv. Based upon your answer for part iii., what conclusion might the quality assurance office make about this employee in terms of the…
- 9. A research center claims that 24% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 700 adults in that country, 28% say that they would travel into space on a commercial flight if they could afford it. At α=0.05, is there enough evidence to reject the research center's claim? Complete parts (a) through (d) below. Question content area bottom Part 1 (a) Identify the claim and state H0 and Ha. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. The percentage adults in the country who would travel into space on a commercial flight if they could afford it is not enter your response here %. B. No more than enter your response here % of adults in the country would travel into space on a commercial flight if they could afford it. C. At least…Question #1 chpt 10 hypothesis test and H0 and Ha(Topic 16) The following data is based upon the results from the *Granite State Poll (New Hampshire polling center) made available on October 19th, 2020. The poll asked respondents about how stressed they were on a scale of 1 through 10 (10 being most stressed) regarding certain events in 2020. In April of 2020, a random sample of 1,002 New Hampshire residents were asked how stressed they were about Covid-19 and 57% of them answered 7 or greater. In October of 2020, a random sample of 899 New Hampshire residents were asked how stressed they were about the presidential election and 68% of them answered 7 or greater. Use this information to complete the hypothesis test claiming that the proportion of people who had a stress level of 7 or more regarding the presidential election was greater than those who had a stress level of 7 or more regarding the Covid-19 pandemic back in April at the 1% significance level. (a) What is the null hypothesis (H0), alternate hypothesis (H1), and tail…
- Question 15: In a recent Super Bowl, a TV network predicted that 90 % of the audience would express an interest in seeing one of its forthcoming television shows. The network ran commercials for these shows during the Super Bowl. The day after the Super Bowl, and Advertising Group sampled 55 people who saw the commercials and found that 48 of them said they would watch one of the television shows.Suppose you are have the following null and alternative hypotheses for a test you are running:H0:p=0.9H0:p=0.9Ha:p>0.9Ha:p>0.9Calculate the test statistic, rounded to 3 decimal places z=Question 12. Directors of a company claim that 90% of the workforce supports a new shift pattern that they have suggested. A random survey of 100 people in the workforce finds 85 in favour of the new scheme. Test if there is a significant difference between the survey results and the director's claim. 12.1 What kind of test will you perform? (a) 1 sample z-test (b) 1 sample t-test (c) 1 sample proportion t-test (d) 2 sample t-test 12.2 State the Alternative Hypothesis (a) H1: mu < 0.9 (b) H1: mu > 0.9 (c) H1: mu 0.9 (d) H1: mu 0.9In a 2014 study, Grossi, Larach, Canals, Vásquez, and Iriarte-Diaz connected weighted sticks to the back of 4 domestic chickens to mimic the tail of a dinosaur and recorded the chicken both walking and standing. They concluded that the manner in which these chickens with dinosaur-like tails then walked in a manner consistent with to the theorized manner in which non-avian dinosaurs walked. What is the population of this study? Question 10 options: All chickens All chickens wearing simulated dinosaur tails Non-avian dinosaurs The 4 chickens studied
- Question 2 The past records of a supermarket show that its customers spend an average of $65 per visit at this store. Recently the management of the store initiated a promotional campaign according to which each customer receives points based on the total money spent at the store, and these points can be used to buy products at the store. The management expects that as a result of this campaign, the customers should be encouraged to spend more money at the store. To check whether this is true, the manager of the store took a sample of 12 customers who visited the store. The following data give the money (in dollars) spent by these customers at this supermarket during their visits. 88 69 141 28 106 45 32 51 78 54 110 83 Assume that the money spent by all customers at this supermarket has a normal distribution. Using the 5% significance level, can you conclude that the mean amount of money spend by all customers at this supermarket after the campaign was started is more than $65?QUESTION 7 Using the logical estimate evaluator strategy to reason out the frequency of throwing every possible outcome for 3 dice, which number of rolls have the same outcome frequency? 10 and 11 9 and 11 6 and 8 8 and 9