You spend $10 on lottery scratch-off tickets (10 tickets total). The lottery agency says your chances of winning are 1 in 4. Using microsoft excel, construct and graph a distribution of the potential outcomes of this experience.
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You spend $10 on lottery scratch-off tickets (10 tickets total). The lottery agency says your chances of winning are 1 in 4. Using microsoft excel, construct and graph a distribution of the potential outcomes of this experience.
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- The lacrosse team has a 65% chance of winning its upcoming games. Find the probability of them winning 8 out of their next 9 matches. Express your answer as a percentage.In 2016 the Better Business Bureau settled 77% of complaints they received in the United States. Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the Better Business Bureau is able to settle. Assume the population proportion of complaints settled for new car dealers is 0.77, the same as the overall proportion of complaints settled in 2016. Use the z-table. a. Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of p. E(F) (to 2 decimals) (to 4 decimals) %3D b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.07 of the population proportion (to 4 decimals)? probability = c. Suppose you select a sample of 460 complaints involving new car dealers. Show the sampling distribution of p. E(F) = (to 2…Incomes of College Students’ Parents. A researcher wants to estimate the average income of parents of college students. To accomplish that, he surveys a sample of 250 students at Yale. Is this a representative sample? Explain your answer.
- A veterinarian recorded how many kittens were born in each litter. This data is summarized in the histogram below. (Note: The last class actually represents "7 or more kittens," not just 7 kittens.) QUESTIONL: What is the frequency of the litter having at most 2 kittens? (PHOTO ATTACHED)The highest score in a distribution is 74 and the lowest score is 51. What is the range?Jocelyn complied data on the number of hours students work per week the summer after senior year. The minumun number of hours in the distribution was 23. The range was 17
- Shenise is a star player for her women's basketball team. She has injured her ankle, and it is doubtful that she will be able to play in an upcoming game. If Shenise can play, the coach estimates that the team will score 91 points. If Shenise is not able to play, the coach estimates that they will score 70 points. The team doctor estimates that there is a 70% chance Shenise will play. Determine the number of points the team can expect to score.The histogram below gives the length of service of members of the Department of Mathematics and Statistics at a particular university. The classes, in years of service, are 0−−4.9, 5−−9.9, etc., and the vertical axis represents the number of faculty. (a) What percent of the department faculty have 20 or more years of service?Answer: % (b) If a member of the department is chosen at random to serve on a university committee, what is the probability (in decimal form) that the chosen representitive will have between 25 and 35 years of service?Answer: (c) What is the probability the representative above will have less than 5 years of service given that the person has less than 15 years of service?Answer:At an art camp, students must specialize in one artistic medium. The camp director looked at her records to see which specialties students chose last summer. sculpture 11 metalworking 4 drawing 13 ceramics 12 Considering this data, how many of the next 50 students to sign up for camp this summer should you expect to specialize in ceramics?
- Continue monitoring the process. A second ten days of data have been collected, see table labeled “2nd 10 Days of Monitoring Reservation Processing Time” in the Data File. Develop Xbar and R charts for the 2nd 10 days of monitoring. Plot the data for the 2nd 10 days on the Xbar and R charts. Is the reservation process for the 2nd 10 days of monitoring in control? If the control chart indicates an out-of-control process, note which days, the pattern, and whether it is the Xbar or R chart. Based on the X-bar and R Charts that you developed for the 2nd 10 days of data, is the process in control? Group of answer choices No. The X-bar and R Charts are both out of control. No. The X-bar Chart is in control, but the R Chart is out of control. No. The R Chart is in control, but the X-bar Chart is out of control. Yes. The X-bar and R Charts are both in control.Nationally 58.3% of federal prisoners are serving time for drug offenses. A warden feels that in his prison the percentage is even higher. He surveys 350 randomly selected inmates’ records and finds that 260 of the inmates are drug offenders. At = 0.05, is he correct?
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