(6)Suppose you are a doctor seeing a patient with a potential tumor (cancer). The patient's test results come back negative. Based on the data below, what is the probability that the patient has cancer?
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- If a binomial experiment has probability p success, then the probability of failure is ____________________. The probability of getting exactly r successes in n trials of this experiment is C(_________, _________)p (1p)Suppose the probability of incorrectly transmitting a single bit is . Compute the probability of correctly receiving a -word coded message made up of -bit words.A binomial experiment is UDC in which there are exactly __________ outcome. One outcome is called __________ , and the other is called ___________.
- (a) A marketing department employs two categories of BBA graduates; from among fresh graduates and among those with work experience. Those with work experience claim that they do better because of their experience. Suppose you are interested to test whether the two groups’ performance is the same. (i) Write down the null hypothesis and the alternative hypothesis in order to run the above test (in words and in notation) (ii) Explain how you would run the test if you have access to a sample of sales performance figures of the employees in each of the two groupsA television executive believes that at least 99% of households in the US have at least one television. An intern at the executive's company is given the task of using a hypothesis test to determine whether the percentage is actually less than 99%. The intern decides to fail to reject the null hypothesis. If, in realiry, 96.7% of house holds own a television set, was an error made? if so, what type.Express the null hypothesis and the alternative hypothesis in notation form in the following scenarios: 1. the principal of the school claims that the mean age of the teachers is 45 years. the mean age of the randomly selected 35 teachers is 42 years, which is not equal to what is claimed by the principal. 2. the mean annual income of worker who are college graduates is greater than 100,000 ayear. 3. The percentage of women who watches sports on TV is not 40% as claimed by a researcher.
- A school reports that 81% of its graduates get jobs within one year. You take a random sample of 67 graduates, of whom 49 got a job within one year. Is this enough evidence to show that a significantly different percent of graduates get jobs than advertised by the school? (Use αα=0.025) For this study, we should use (t-test, z-test) The null and alternative hypotheses would be: H0: (symbol) (symbol) _____ (please enter a decimal) H1: (symbol) (symbol) _____ (Please enter a decimal) The test statistic (symbol) = ______ (please show your answer to 3 decimal places.) The p-value = ______ (Please show your answer to 4 decimal places.) The p-value is (symbol) αα Based on this, we should (accept, reject, fail to reject) the null hypothesis. As such, the final conclusion is that ... The sample data suggest that the populaton proportion is significantly different than 81% at αα = 0.025, so there is sufficient evidence to conclude…reviously, 3% of mothers smoked more than 21 cigarettes during their pregnancy. An obstetrician believes that the percentage of mothers who smoke 21 cigarettes or more is less than 3% today. She randomly selects 150 pregnant mothers and finds that 2 of them smoked 21 or more cigarettes during pregnancy. Test the researcher's statement at the α=0.05 level of significance. What are the null and alternative hypotheses? H0: ▼ pp sigmaσ muμ ▼ less than< equals= not equals≠ greater than> nothing versus H1: ▼ pp sigmaσ muμ ▼ less than< not equals≠ greater than> equals= nothing (Type integers or decimals. Do not round.) Because np01−p0=nothing ▼ greater than> not equals≠ equals= less than< 10, the normal model ▼ may may not be used to approximate the P-value. (Round to one decimal place as needed.) Find the P-value. P-value=nothing (Round to three decimal places as needed.) Is there sufficient evidence…A refrigerator manufacturer claims that the mean life of its refrigerators is greater than 13 years. You are asked to perform a hypothesis test to test this claim. (a) How would you write the null and alternative hypothesis if you represent the manufacturer and want to support the claim? (b) How would you write the null and alternative hypothesis if you represent the competitor and want to reject the claim?