What is the chance it was the virus that did it (and thus a reboot will destroy the files!)?
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Q: In a Bernoulli process with success rate 5/11, how many trials do we expect to wait for
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A: Given Information: Cow's milk: Sample size n1=1000 Out of which x1=110 volunteers developed…
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A: Given information: Saline FSH 17 10 31 29 14 37 12 41 29 16 23 45 7 34 19 57…
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Q: A medical study followed 675 cancer patients who received either the new drug lafent or a standard…
A: Given that there are 675 cancer patients who received either the new drug or a standard chemotherapy…
Q: A national study found that treating people appropriately for high blood pressure reduced their…
A: Previous situation: Hypertensives who do not know they have high blood pressure = 50%. Therefore,…
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A: Let , H = Event to be hit. F = Event to be flop. AH = Predicted hit AF =…
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A: Given:
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A: Given that According to the centers of disease control About 20% of American young people between…
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Q: A national study found that treating people appropriately for high blood pressure reduced their…
A: Introduction to binomial distribution: Consider a random experiment involving n independent trials,…
Q: Globally, 35% of all ridged brittleshell tortoises have spots on their shells. A herpetologist in…
A: Solution
Q: A study published in JAMA in 2004 examined past results of other studies on bariatric surgery.…
A: It is given that x=1417 and n=1846.
Q: A study published in JAMA in 2004 examined past results of other studies on bariatric surgery.…
A: It is given that x=1417 and n=1846.
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A: Answer : Blank 1 - Null Hypothesis Blank 2 - Alternate Hypothesis
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A: From the provided information,
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Q: what is the null and alternative hypothesis?
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A: In the studies reporting on the effects of the surgery on Type ll diabetes, 1417 of 1846 diabetic…
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A: Given information: PFit=0.39PUnfit=1-PFit=1-0.39=0.61 PFailFit=0.50PPassFit=1-0.50=0.50…
Q: According to an article in Science Daily,† women who are having difficulty becoming pregnant…
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Q: A study published in JAMA in 2004 examined past results of other studies on bariatric surgery.…
A: Introduction: Denote p as the true proportion of Type ll diabetic patients who recovered completely…
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Q: A study published in JAMA in 2004 examined past results of other studies on bariatric surgery.…
A: It is given that x=1417 and n=1846.
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
An unattended laptop computer has been infected with a virus which, if not removed by the protection program, has a 94% chance of infiltrating the operating system and destroying all stored files. To do this, it will institute a shutdown and require a user reboot. The laptop’s virus protection program, unfortunately, is outdated and thus has only a 68% chance of removing the virus once it has infected the computer. Further, to complete removal, the protection program will also need to institute a shutdown and require a user reboot. The computer has also been set to institute a shutdown on its own, if left unused for an hour, in order to conserve battery power.
Suppose the laptop’s owner returns after 60 minutes to find it has shutdown. What is the chance it was the virus that did it (and thus a reboot will destroy the files!)?
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- An independent research group has been studying the chances that an accident at a nuclear power plant will result in radiation leakage. The group considers that the only possible types of accidents at a reactor are fire, mechanical failure, and human error, and that two or more accidents never occur together. It has performed studies that indicate that if there were a fire, a radiation leak would occur 20 percent of the time; if there were a mechanical failure, a radiation leak would occur 50 percent of the time; and if there were a human error, a radiation leak would occur 10 percent of the time. Its studies have also shown that the probability of A fire and a radiation leak occurring together is 0.0010. A mechanical failure and a radiation leak occurring together is 0.0015. A human error and a radiation leak occurring together is 0.0012. (a)What are the respective probabilities of a fire, mechanical failure, and human error? (b)What are the respective probabilities that a…A smartphone manufacturer is so certain of its quality control that it offers a complete replacement warranty if the smartphone fails within 3 years. Based upon compiled data, the company notes that there is a 2 percent chance that its smartphone will fail during the first year, a 10 percent chance that a smartphone that survives the first year fails during the second year, and a 20 percent chance that a smartphone that survives the first two years fails during the third year. The warranty does not cover replacement smartphones after the third year. (a) Formulate the evolution of the status of the smartphone as a Markov Chain whose states include two abosrbing states that involve needing to honor the warranty or having the smartphone survive the warranty period. Construct the transition probability matrix and draw the transition probability diagram. (b) Determine the probability that: (a) the manufacturer will have to honor the warranty and (b) the manufacturer will not…A hypothetical study looks at the effect of drinking alcohol on health. Across all genders and age groups, people who do not drink tend to be healthier on average than people who do drink. However, people who drink regularly are on average healthier than those people who have recently stopped drinking. Is it reasonable to conclude that for the sake of health, we should not start drinking, but if we have already started drinking alcohol, it is healthier to continue and not to stop?
- A seven-year medical research study reported that women whose mothers took the drug DES during pregnancy were twice as likely to develop tissue abnormalities that might lead to cancer as were women whose mothers did not take the drug. a. This study compared two What were the populations? b. Do you suppose the data were obtained in a survey or an experiment? c. For the population of women whose mothers took the drug DES during pregnancy, a sample of 3980 women showed that 63 developed tissue abnormalities that might lead to Provide a descriptive statistic that could be used to estimate the number of women out of 1000 in this population who have tissue abnormalities. d. For the population of women whose mothers did not take the drug DES during pregnancy, what is the estimate of the number of women out of 1000 who would be expected to have tissue abnormalities? e. Medical studies often use a relatively large sample (in this case.3980).Why?A national study found that treating people appropriately for high blood pressure reduced their overall mortality by 20%. Treating people adequately for hypertension has been difficult because it is estimated that 50% of hypertensives do not know they have high blood pressure, 50% of those who do know are inadequately treated by their physicians, and 50% who are appropriately treated fail to follow this treatment by taking the right number of pills. If the preceding 50% rates were each reduced to 35% by a massive education program, then what effect would this change have on the overall mortality rate among true hypertensives; that is, would the mortality rate decrease and, if so, what percentage of deaths among hypertensives could be prevented by the education program? (Round your answer to two decimal places.) The overall mortality rate among hypertensives would be reduced by how much? If possible please demonstarte how this can be done on a calculator, thank you!Cardiovascular disease is a major cause of death and illness worldwide, with high blood pressure and high LDL cholesterol both being established risk factors. Because most cardiovascular events occur in persons with average risk and no previous cardiovascular disease history, the present research examined the simultaneous use of both blood pressure‑reducing drugs and cholesterol‑reducing drugs on this population rather than focus on only those at high risk. Subjects included men at least 55 years old and women at least 65 years old without cardiovascular disease who had at least one additional risk factor besides age, such as recent or current smoking, hypertension, or family history of premature coronary heart disease. Those with current cardiovascular disease were excluded from the study. Subjects were randomly assigned to the treatment (cholesterol‑ and blood pressure‑reducing drugs) or a placebo, and the number suffering the primary outcome of a fatal cardiovascular event or a…
- A team physician has determined that of all the athletes who were treated for minor back pain, 72% responded to an analgesic, 59% responded to a muscle relaxant, and 44% responded to both forms of treatment. What percent of the athletes who were treated responded to the muscle relaxant but not to the analgesic? What percent of the athletes who were treated did not respond to either form of treatment?According to an article in Science Daily,† women who are having difficulty becoming pregnant sometimes use human growth hormone (HGH) in addition to in-vitro fertilization (IVF) to try to have a baby. A large study found that "there was no strong evidence" that the proportion of women who became pregnant while taking HGH along with IVF was greater than the success rate for IVF alone.A psychologist conducts a 2 x 3 x 2 ANOVA. How many main effects are possible? How many interactions are possible?
- Globally, 35% of all ridged brittleshell tortoises have spots on their shells. A herpetologist in Citition collects a sample of 38 ridged brittlesell tortoises and finds that 16 of them have spots on their shells. The herpetologist would like to test the claim that the proportion of ridged brittleshell tortoises in Cititon with spots on their shells is greater than 35%. The herpetologist ends up rejecting the null hypothesis. If the actual proportion of ridged brittleshell tortoises in Cititon with spots on their shells is 41%, then what type of error, if any, has occurred? In the problem above, what is the test statistic?As horses get older, poor hoof and tendon health leads to joint pain, reducing a horse’s activity level. Such a reduction can lead to other health concerns such as obesity and a decrease in energy due to lack of exercise. A study is to be conducted to determine which of two diet supplements, Vitamin C and D-cycloserine, is more effective in promoting hoof and tendon health and reducing the onset of osteoporosis in horses. Researchers will randomly select a total of 300 horses from ten different large animal veterinary practices around the country. All of the horses are more than 5 years old, and their owners have given consent to participate in the study. Changes in hoof and tendon health will be evaluated after 6 months of treatment. What would be an advantage to adding a control group in the design of this study? Assuming a control group is added to the other two groups in the study, explain how you would assign the 300 horses to these three groups for a completely randomized…Historically, the proportion of people who trade in their old car to a car dealer when purchasing a new car is 48%. Over the previous six months, in a sample of 115 new car buyers, 46 have traded in their old car. To determine whether the proportion of new car buyers that trade in their old car has this is sickly significantly decreased, what is the null and alternative hypothesis?