MY NOTESASK YOUR TEACHERPRACTICE ANOTHERDeer ticks can be carriers of either Lyme disease or human granulocytic ehrlichiosis (HGE), Based on a recent study, suppose that 18% of all ticks in a certain location carry Lyme disease, 6% carry HGE, and 6% of the ticks that carry at least one of these diseases in fact carry both of them. If arandomly selected tick is found to have carried HGE, what is the probability that the selected tick is also a carrier of Lyme disease? (Round your answer to four decimal places.)Need Help? Read ItWatch It Master RSubmit Answer

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A researcher is creating a new treatment protocol for Myelodysplastic Syndrome (MDS), a form of preleukemia. Following the old treatment protocol, 28% of patients with MDS will develop leukemia within 5 years of MDS diagnosis. He believes his new treatment protocol will lead to fewer MDS patients developing leukemia. He takes a random sample of 100 individuals on his new treatment protocol. Of these 100 individuals, 20 develop leukemia within 5 years of MDS diagnosis. Conduct a hypothesis test at the 10% level to test this claim that his new treatment protocol will lead to fewer MDS patients developing leukemia. What is the value of the test statistic? Make sure you round your final answer to two decimal places. Hint: When you are calculating your standard error, round to four decimal places to ensure your test statistic is accurate.
A researcher is creating a new treatment protocol for Myelodysplastic Syndrome (MDS), a form of preleukemia. Following the old treatment protocol, 28% of patients with MDS will develop leukemia within 5 years of MDS diagnosis. He believes his new treatment protocol will lead to fewer MDS patients developing leukemia. He takes a random sample of 100 individuals on his new treatment protocol. Of these 100 individuals, 20 develop leukemia within 5 years of MDS diagnosis. Conduct a hypothesis test at the 10% level to test this claim that his new treatment protocol will lead to fewer MDS patients developing leukemia. What is the p-value? Do not round your answer.
Electric vehicles are often categorized by the range of miles that can be travelled on a single battery charge, since charging stations are not yet widespread in the United States. The latest model of a certain brand of electric car is reported to have an average range of 240 miles. An auto industry journalist would like to verify this claim, since he believes that the true range of the car may be less than 240 miles. The journalist selected and tested a random sample of 120 cars of this model and found that the average range of the sample was 229.8 miles with a standard deviation of 47.7 miles. Apply the p-value method to test the hypothesis that the average range of this electric car model is less than 240 miles, using a significance level of 5%. State the null and alternative hypothesis for this test. Ho: ? V H₁: ? V Determine if this test is left-tailed, right-tailed, or two-tailed. Otwo-tailed Oleft-tailed Oright-tailed Should the standard normal (2) distribution or Student's (t)…
Suppose a study investigated the effects of vitamin A, vitamin C, and omega-3 fatty acids supplements on improving eye health and vision. 300 adults volunteered to take part in the study. In the study, participants were randomly assigned to one of 3 different levels of Vitamin A (Level A, Level B, or Level C) and randomly assigned to one of 2 different levels of Vitamin C (Level 1 or Level 2) and randomly assigned to one of 2 different levels of omega-3 fatty acid (Level I or Level II). a. Identify the subjects of the study. b. Identify the factor(s) for the study and the number of treatment level(s) for each factor. c. How many different treatment groups are there in this study?
A researcher is creating a new treatment protocol for Myelodysplastic Syndrome (MDS), a form of preleukemia. Following the old treatment protocol, 28% of patients with MDS will develop leukemia within 5 years of MDS diagnosis. He believes his new treatment protocol will lead to fewer MDS patients developing leukemia. He takes a random sample of 100 individuals on his new treatment protocol. Of these 100 individuals, 20 develop leukemia within 5 years of MDS diagnosis. Conduct a hypothesis test at the 10% level to test this claim that his new treatment protocol will lead to fewer MDS patients developing leukemia. What is the significance level? a. 0.10 b. 0.05 c. 0.20 d. 0.01 e. 0.28
Capsaicin content in red habanero chilli (Capsicum chinense Jacq.) is affected by the drying process. An experiment was conducted to determine the effect of using different drying temperatures (60 oC, 70 oC, and 80 oC) using an oven. Samples of red habanero chilli were procured. Upon checking, there were varying sizes of chilli and thus the experimenter grouped the samples according to size. Drying temperatures were then randomly assigned within each group for 8 hours. The capsaicin content was measured for each sample. The partial analysis of variance table is shown below: What is the maximum number of orthogonal contrasts that may be constructed for the posthoc analysis of the effect of temperature?A. 0 B. 1 C. 2 D. 3
In randomized, double-blind clinical trials of a new vaccine, rats were randomly divided into two groups. Subjects in group 1 received the new vaccine while subjects in group 2 received a control vaccine. After the second dose, 104 of 664 subjects in the experimental group (group 1) experienced drowsiness as a side effect. After the second dose, 61 of 545 of the subjects in the control group (group 2) experienced drowsiness as a side effect. Does the evidence suggest that a higher proportion of subjects in group 1 experienced drowsiness as a side effect than subjects in group 2 at the α = 0.05 level of significance? verity the model requirements. Select all that apply. A. The sample size is less than 5% of the population size for each sample. B. The samples are independent. C. The samples are dependent. □D. M₁0₁ (1-0₁) ² 1 - ₁) ≥ 10 and n₂^₂ (1-P₂) ≥10 E. The sample size is more than 5% of the population size for each sample. F. The data come from a population that is normally…
A random selection of volunteers at a research institute has been exposed to a weak flu virus. After the volunteers began to have flu symptoms, 10 of them were given multivitamin tablets daily that contained 1 gram of vitamin C and 3 grams of various other vitamins and minerals. The remaining 10 volunteers were given tablets containing 4 grams of vitamin C only. For each individual, the length of time taken to recover from the flu was recorded. At the end of the experiment the following data were obtained. Days to recover from flu Treated with 4.0, 7.9, 6.1, 2.9, 4.0, 4.0, 4.5, 6.4, 5.6, 2.3 multivitamin Treated with 4.0, 6.6, 8.5, 3.2, 4.8, 2.6, 3.4, 3.2, 7.6, 7.7 vitamin C Send data to calculator v Suppose that it is known that the population standard deviation of recovery time from the flu is 1.8 days when treated with multivitamins and that the population standard deviation of recovery time from the flu is 1.5 days when treated with vitamin C tablets. Suppose also that both…
The drug X is marketed to help protect against male pattern baldness, and it also may protect against prostate cancer. A large sampleof healthy men over age 60 were randomly assigned to receive either a daily drug X pill or a placebo. The study lasted nine years and the men had annual check-ups and a biopsy at the end of the study. Prostate cancer was found in 815 of 4368 men taking drug X and in 1176 of the 4698 men taking a placebo. What kind of a study is this and what mesure of assocation (rd, rr, or) can be used and why?
There was a 5-year study of asthma among children in the state of Rhode Island. Children were followed and assessed for new asthma cases every year. At the beginning of the study 17 of the 2,400 children already had asthma. At the first yearly assessment 15 more kids had developed asthma. At the second yearly assessment 20 more kids had developed asthma. At the third assessment 34 more kids, at the fourth assessment 25 more kids, and at the final and fifth assessment 15 more kids had developed asthma. What was the point prevalence of asthma among children in RI at the beginning of the study? What was the cumulative incidence of asthma over the five-year study? What was the incidence density of asthma in the study?
Mammography and clinical breast examination are the two major techniques used to screen for breast cancer. However, as true for any screening test, they are not completely accurate. If it is determined, based on mammographic findings, that there is a possibility of breast cancer, this is usually confirmed or disconfirmed by a subsequent biopsy. A false positive test is a mammogram positive test that is disconfirmed by biopsy. The data in Table 1 were reported in a paper concerning breast cancer screening (Elmore, et al, New England Journal of Medicine 1998; 338(16): 1089-1096). Table 1 False positive breast cancer screening tests over a 10-year period # Screening tests # False positive tests 9762 631 1. Another aspect of mammographic screening is the presence of false negatives. A false negative is a screen negative woman who has breast cancer. False negatives usually occur because the tumors are small and hard to detect. It is estimated that among women with breast cancer, 2% of all…
An experiment to determine if a migraine medication decreases a person's average number of monthly migraines is performed on 400 people who report they have several migraines a month. Researchers randomly assigned 200 people to the treatment group and 200 people to the control group. After the study, the researchers determined that 48 of the subjects in the treatment group and 28 of the subjects in the control group average fewer migraines per month. The data from the two groups are resampled 150 times, and the table shows the distribution of the differences of the proportions for the reconfigured treatment and control groups.

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