Give a brief analysis on the graph given in the picture by using the data (Dominant behaviors of reisdent male with or without injecting
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Give a brief analysis on the graph given in the picture by using the data (Dominant behaviors of reisdent male with or without injecting octopamine)
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- Neutropenia. Neutropenia is an abnormally low number of neutrophils (a type of white blood cell) in the blood. Chemotherapy often reduces the number of neutrophils to a level that makes patients susceptible to fever and infections. G. Bucaneve et al. published a study of such cancer patients in the paper “Levofloxacin to Prevent Bacterial Infection in Patients With Cancer and Neutropenia” (New England Journal of Medicine, Vol. 353, No. 10, pp. 977–987). For the study, 375 patients were randomly assigned to receive a daily dose of levofloxacin, and 363 were given placebo. In the group receiving levofloxacin, fever was present in 243 patients for the duration of neutropenia, whereas fever was experienced by 308 patients in the placebo group. a. At the 1% significance level, do the data provide sufficient evidence to conclude that levofloxacin is effective in reducing the occurrence of fever in such patients? b. Find a 98% confidence level for the difference in the proportions of such…Using the students’ T test determine whether test agent causes significant inhibition of colony formationLearning math Developers of a new math curriculumcalled “Accelerated Math” compared performances ofstudents taught by their system with control groups ofstudents in the same schools who were taught using traditional instructional methods and materials. Statis-tics about pretest and posttest scores are shown in the table. (J. Ysseldyke and S. Tardrew, Differentiating MathInstruction, Renaissance Learning, 2002)a) Did the groups differ in average math score at thestart of this study? b) Did the group taught using the Accelerated Math pro-gram show a significant improvement in test scores? c) Did the control group show a significant improve-ment in test scores? d) Were gains significantly higher for the AcceleratedMath group than for the control group? Instructional MethodAcc. math ControlNumber of students 231 245Pretest Mean 560.01 549.65St. Dev 84.29 74.68Post-test Mean 637.55 588.76St. Dev 82.9 83.24Individual gain Mean 77.53 39.11St. Dev. 78.01 66.25
- Anxiety disorders and symptoms can often be effectivelytreated with benzodiazepine medications. It isknown that animals exposed to stress exhibit adecrease in benzodiazepine receptor binding in thefrontal cortex. The article “Decreased BenzodiazepineReceptor Binding in Prefrontal Cortex in Combat-Related Posttraumatic Stress Disorder” (Amer. J.of Psychiatry, 2000: 1120–1126) described the firststudy of benzodiazepine receptor binding in individualssuffering from PTSD. The accompanying data on areceptor binding measure (adjusted distribution volume)was read from a graph in the article.PTSD: 10, 20, 25, 28, 31, 35, 37, 38, 38, 39, 39,42, 46Healthy: 23, 39, 40, 41, 43, 47, 51, 58, 63, 66, 67,69, 72Use various methods from this chapter to describe andsummarize the data.Specificity of the association is best described as A. when the value of the response variable changes in a meaningful way with the dosage of the suspected cause. B. when the suspected cause precedes the response variable. C. when similar studies produce similar results. D. when all other possible causes are ruled out.A driver's ability to detect highway signs is an important consideration in highway safety. In his dissertation, S. Younes investigated the distance at which drivers can first detect highway caution signs. This distance is called the detection distance. Younes analyzed the effect that sign size and sign material have on detection distance. Drivers were randomly assigned to one combination of sign size (small, medium, and large), and sign material (1, 2, and 3). Each driver covered the same stretch of highway at a constant speed during the same time of day, and the detection distance, in feet, was determined for the driver's assigned caution sign.
- Fast reactions: In a study of reaction times, the time to respond to a visual stimulus x and the time to respond to an auditory stimulus y were recorded for each of 7 subjects. Times were measured in thousandths of a second. The results are presented in the following table. The results are presented in the following table. Visual Auditory 176 163 201 197 188 193 228 209 211 189 203 206 191 169 Compute the least-squares regression line for predicting the time to respond to an auditory (y) from the time to respond to a visual stimulus (x). Round the slope and y-intercept values to at least four decimal places.a) State the null and alternative hypothesisb) Determine the critical value by using t-tablec) Determine the rejection regiond) Calculate the Test statisticRock Sparrows. Rock Sparrows breeding in northern Italy are the subject of a long-term ecology and conservation study due to their wide variety of breeding patterns. Both males and females have a yellow patch on their breasts that is thought to play a significant role in their sexual behavior. A. Pilastro et al. conducted an experiment in which they increased or reduced the size of a female’s breast patch by dying feathers at the edge of a patch and then observed several characteristics of the behavior of the male. Their results were published in the paper “Male Rock Sparrows Adjust Their Breeding Strategy According to Female Ornamentation: Parental or Mating Investment?” (Animal Behaviour,Vol. 66, Issue 2, pp. 265–271). Eight mating pairs were observed in each of three groups: a reduced-patch-size group, a control group, and an enlarged-patch-size group. The data on the WeissStats site, based on the results reported by the researchers, give the number of minutes per hour that males…
- Fast reactions: In a study of reaction times, the time to respond to a visual stimulus x and the time to respond to an auditory stimulus y were recorded for each of 8 subjects. Times were measured in thousandths of a second. The results are presented in the following table. The results are presented in the following table. Use the TI-84 calculator. Visual Auditory 161 159 176 163 178 201 188 193 191 169 211 189 235 241 228 209 Compute the least-squares regression line for predicting the time to respond to an auditory (y) from the time to respond to a visual stimulus (x). Round the slope and y-intercept values to at least four decimal places.Ground Water. The U.S. Geological Survey, in cooperation with the Florida Department of Environmental Protection, investigated the effects of waste disposal practices on ground water quality at five poultry farms in north-central Florida. At one site, they drilled four monitoring wells, numbered 1, 2, 3, and 4. Over a period of 9 months, water samples were collected from the last three wells and analyzed for a variety of chemicals, including potassium, chlorides, nitrates, and phosphorus. The concentrations, in milligrams per liter, are provided on the WeissStats site. For each of the four chemicals, decide whether the data provide sufficient evidence to conclude that a difference exists in mean concentration among the three wells. Use α = 0.01. [SOURCE: USGS Water Resources Investigations Report 95-4064, Effects of Waste-Disposal Practices on Ground- Water Quality at Five Poultry (Broiler) Farms in North-Central Florida, H. Hatzell, U.S. Geological Survey] a. conduct a one-way ANOVA…Teaching Duties. Contingent faculty members in higher education are non-tenure track faculty, adjuncts, postdocs, lecturers, or instructors. R. Bowden and L. Gonzalez researched whether contingent faculty members are different from tenure-track faculty members with regards to teaching, research, and service in the article “The Rise of Contingent Faculty: Its Impact on the Professoriate and Higher Education” (Journal of Applied Research in Higher Education, Vol. 4, No. 1, pp. 5–22). A hypothesis test was conducted to decide whether the mean number of classes taught for credit per semester was less for contingent faculty than for tenure-track faculty. a. identify the variable. b. identify the two populations. c. determine the null and alternative hypotheses. d. classify the hypothesis test as two tailed, left tailed, or right tailed.