si XDiscussion Board - 20 xBb Review Test Submisi2020 Fail TelJangelyrodriguez/Downloads/MTH%2023%20Final%20Exam.pdf2. Answer the following questions:(a) An average of 65% of the students at every Santo Ferro high school caught thecommon cold, 50% of the students caught a flu. Among the students whocaught the common cold, 40% caught the flu. What is the probability that arandomly selected student had the common cold and the flu?Answer: The probability is(b) 40% of an insurance agent's clients have life insurance, 39% have autoinsurance, and 25% have both insurance policies. What is the probability that arandomly selected client has life insurance or auto insurance?Answer: The probability is...16ty HistoryBOokmarkSPeopleTabidowHeipBb Discussion Board - 20 xBb Review Test Submissi xBb Exams - 2020 Fall Ter xO MTH 23 Final Exam.poXlyrodriguez/Downloads/MTH%2023%20Final%20Exam.pdf3. A hair salon completed a survey of 401 customers about satisfaction with service(Dissatisfied, Neutral, Satisfied, or Very satisfied) and type of customer (Walk-in,saw a TV ad, or Referred). The results follow:Walk-InTV AdReferredTotalDissatisfied101532Neutral20253075Satisfied354041116Very Satisfied505865173Total112133151401Assume the table represents the entire population of customers. Find the probability thata customer is:(a) DissatisfiedAnswer: The probability is(b) Dissatisfied and a walk-inAnswer: The probability is(c) ReferredAnswer: The probability is(d) Very satisfied, given walk-inAnswer: The probability is(e) Satisfied or saw a TV adAnswer: The probability isDEC16tv

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Description: si XDiscussion Board - 20 xBb Review Test Submisi2020 Fail TelJangelyrodriguez/Downloads/MTH%2023%20Final%20Exam.pdf2. Answer the following questions:(a) An average of 65% of the students at every Santo Ferro high school caught thecommon cold, 50% o

(a) Given: 65% of the students at Santo Ferro High School caught common cold while 50% caught a flu.…

Math

Probability

2. Answer the following questions: (a) An average of 65% of the students at every Santo Ferro high school caught the common cold, 50% of the students caught a flu. Among the students who caught the common cold, 40% caught the flu. What is the probability that a randomly selected student had the common cold and the flu? Answer: The probability is

2. Answer the following questions: (a) An average of 65% of the students at every Santo Ferro high school caught the common cold, 50% of the students caught a flu. Among the students who caught the common cold, 40% caught the flu. What is the probability that a randomly selected student had the common cold and the flu? Answer: The probability is

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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1 viewsConsumer Reports tested 166 different point-and-shoot digital cameras. Based upon factors such as the number of megapixels, weight (oz.), image quality, and ease of use, they developed an overall score for each camera tested. The overall score ranges from 0 to 100, with higher scores indicating better overall test results. Selecting a camera with many options can be a difficult process, and price is certainly a key issue for most consumers. By spending more, will a consumer really get a superior camera? And, do cameras that have more megapixels, a factor often considered to be a good measure of picture quality, cost more than cameras with fewer megapixels? Table 14.13 shows the brand, average retail price ($), number of megapixels, weight (oz.), and the overall score for 13 Canon and 15 Nikon subcompact cameras tested by Consumer Reports (Consumer Reports website). Managerial Report 1. Develop numerical summaries of the data. 2. Using overall score as the dependent variable,…
Present the five-step model, testing your hypothesis at the 0.05 level.
Reducing scrap of 4-foot planks of hardwood is an important factor in reducing cost at a wood-flooring manufacturing company. Accordingly, engineers at Lumberworks are investigating a potential new cutting method involving lateral sawing that may reduce the scrap rate. To examine its viability, samples of 600 and 500 planks, respectively, were examined under the old and new methods. Sixty-one of the 600 planks were scrapped under the old method, whereas 36 of the 500 planks were scrapped under the new method. (You may find it useful to reference the appropriate table: z table or t table)a. Construct the 99% confidence interval for the difference between the population scrap rates between the old and new methods, respectively. (Negative values should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.)
Explain the Stationarity in the AR(1) Model?
CBS poll of March 2005 referred to in Exercise 65, 49% agreed that Social Security taxes should be raised if necessary to keep the system afloat, and 43% agreed that it would be a good idea to invest part of their Social Security taxes on their own. What is the largest percentage of people who could have agreed with at least one of these statements? What is the smallest percentage of people who could have agreed with at least one of these statements?
During the Covid crisis, there were lockdowns and working-from-home, which made collecting data on unemployment more challenging. Researchers from a US University conducted a survey of 1,000 individuals in the labour force to assess rise in unemployment in September 2020. The object was to find out whether the unemployment rate had risen above a benchmark proportion of 5 per cent of the labour force in Scotland. Of the surveyed persons, 60 reported being unemployed in the week prior to the survey. Conduct a two-tailed test of whether unemployment rate during this period was 5 per cent. Set out your null and alternative hypotheses, significance level, test statistic, assumptions and sampling distribution clearly. Conduct the test and comment on the economic significance of the findings.
1. The Federal Seed Act (FSA) dictates minimum germination standard for vegetable seed in interstate commerce (https://www.law.cornell.edu/cfr/text/7/201.31). The table at the link states that carrot seed must have a germination rate at least 55%. This means that if the seeds are planted under appropriate conditions, at least 55% of them will sprout.A producer of carrot seed would like to ensure their seeds exceed the standard. They take random samples of 1200 seeds and plant them under appropriate conditions. Of the 1200 seeds, 712 of them germinate. A. State the question of interest and parameter of interest. b. State the null and alternative hypotheses. c. Write down an inventory of the information given. d. Check the conditions needed for inference. There are two conditions. State each condition and whether it is met in this study. e. Calculate the test statistic. f. Calculate the p-value. (Drawing a picture is always helpful.) g. Write the conclusion in context.
Explain the role of the first GLS assumption?
In a study of exhaust emissions from school buses, the pollution intake by passengers was determined for a sample of nine school buses used in the Southern California Air Basin. The pollution intake is the amount of exhaust emissions, in grams per person per million grams emitted, that would be inhaled while traveling on the bus during its usual 18-mile18-mile trip on congested freeways from South Central LA to a magnet school in West LA. (In comparison, a city of 11 million people will inhale a total of about 1212 grams of exhaust per million grams emitted.) The amounts for the nine buses when driven with the windows open are given in the table. 1.15 0.33 0.40 0.33 1.35 0.38 0.25 0.40 0.35 A good way to judge the effect of outliers is to do your analysis twice, once with the outliers and a second time without them. Give the 90%90% confidence interval with all the data for the mean pollution intake among all school buses used in the Southern California Air Basin that…
A study published in JAMA in 2004 examined past results of other studies on bariatric surgery. Bariatric surgery is done to replace the size of the stomach in various ways. It is typically used on only obese patients, and one the traditional form of the surgery, gastric bypass has a 1% mortality (death) rate caused by surgery. However, in the studies reporting on the effects of the surgery on Type ll diabetes, 1417 of 1846 diabetic patients recovered completely from diabetes after surgery. These patients no longer need medication like insulin (which is injected into the skin) or pills to help manage blood sugar. What is the percentage of patients who recovered from diabetes in 2004?
A study published in JAMA in 2004 examined past results of other studies on bariatric surgery. Bariatric surgery is done to replace the size of the stomach in various ways. It is typically used on only obese patients, and one the traditional form of the surgery, gastric bypass has a 1% mortality (death) rate caused by surgery. However, in the studies reporting on the effects of the surgery on Type ll diabetes, 1417 of 1846 diabetic patients recovered completely from diabetes after surgery. These patients no longer need medication like insulin (which is injected into the skin) or pills to help manage blood sugar. In a study released a decade later, the percentage of patients who recover from diabetes has increased 80%. Using confidence intervals determine whether this is a significant change from the 2004 data. Use n=2000
A study published in JAMA in 2004 examined past results of other studies on bariatric surgery. Bariatric surgery is done to replace the size of the stomach in various ways. It is typically used on only obese patients, and one the traditional form of the surgery, gastric bypass has a 1% mortality (death) rate caused by surgery. However, in the studies reporting on the effects of the surgery on Type ll diabetes, 1417 of 1846 diabetic patients recovered completely from diabetes after surgery. These patients no longer need medication like insulin (which is injected into the skin) or pills to help manage blood sugar. What is the 90%, 95%, and 99% confidence interval for the percentage of recovery from diabetes (2004) data?