2- Researchers into the genetic disease sikle cell anemia are interested in how red blood cells adhere to endothelial cells, whichform the innermost lining of blood vessels. A set of 14 blood samples are obtained, and each sample is split in half. One halfof the blood sample is profused over an endothelial monolayer of type A, and the other half of the blood sample is profusedover an endothelial monolayer of type B. The data reported below are the number of adherent red blood cells per mm2.Question: Write the hypothesis that whether there is there any evidence that the different stimulation conditionsaffect the adhesion of red blood cells?Note: M denotes u in options A-EBlood Sampleendothelial monolayerendothelial monolayerof type Aof type B1271292133133312712741161221321311261257132128814413691271331013913311117119121351391312112314121138 a)t-test, Hypothesis: H_0: M_A=M_B; H_1: M_A + M_Bb) OPaired t-test, Hypothesis: H_0: M_A=M_B; H_1: M_A< M_Bc)Paired t-test, Hypothesis: H_0: M_A=M_B; H_1: M_A> M_Bd)Paired t-test, Hypothesis: H_0: M_A=M_B; H_1: M_A+ M_Be)t-test, Hypothesis: H_0: M_A=M_B; H_1: M_A

Given: Sample size n = 14 one half of blood sample - Type A other half of blood sample - Type B

Answered: Researchers into the genetic disease…

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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The impact of a low-calorie diet on laboratory mice's longevity is being investigated by a medical researcher. Twenty mice are split into two groups (E and F) by random. A typical diet is given to Group E, while Group F is given a diet that only contains 70% as many calories as Group E's diet. The length of life (in days) of each mouse over the 36-month trial is documented. Table 2 provides the data that was obtained. The symbol of double star (**) signifies that the mouse was still alive at the end of the investigation. (a) (b) (c) Table 2: The length of life (in days) of each mouse Group E 900 907 751 833 920 787 830 877 848 901 Group F 1037 905 1023 988 1078 1011 ** 1063 898 1033 State a suitable null and alternative hypotheses for the problem. At 5% significance level, test the hypotheses in part (a) by using an appropriate nonparametric test. Write your conclusion.
One variety of corn is genetically modified to produce chemicals for defense against predators. The standard corn contains the same standard genotype, but without genetic modification for the chemicals. The two types of corn are then planted in randomly placed adjacent plots across a single field. The amount of predators that are present when the corn has matured are then recorded. The data that was recorded of the predators present among each type are listed. Has genetic alterations decreased the amount of predators for the altered genotype? Normality tests for the populations of both contain a p value less than 0.05. The given alpha is 0.05 Modified Corn (20, 18, 26, 23, 17, 23, 22) Standard Corn (89, 64, 102, 96, 56, 77, 84, 59) use an F test to determine if the variance between the 2 lists are different. Based on this result, state the correct 2 sample parametric test to be used. State the null and alternative. Show calculations while rounding to two decimal points.What is the…
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?
The Department of Natural Resources (DNR) received a complaint from recreational fishermen that a community was releasing sewage into the river where they fished. These types of releases lower the level of dissolved oxygen in the river and hence cause damage to the fish residing in the river. An inspector from the DNR designs a study to investigate the fishermen’s claim. Fifteen water samples are selected at locations on the river upstream from the community and fifteen samples are selected downstream from the community. The dissolved oxygen readings in parts per million (ppm) are given in the following table.Upstream 5.2 4.8 5.1 5.0 4.9 4.8 5.0 4.7 4.7 5.0 4.6 5.2 5.0 4.9 4.7, Downstream 3.2 3.4 3.7 3.9 3.6 3.8 3.9 3.6 4.1 3.3 4.5 3.7 3.9 3.8 3.7 a.In order for the discharge to have an impact on fish health, there needs to be at least a 0.5 ppm reduction in the dissolved oxygen. Do the data provide sufficient evidence that there is a large enough reduction in the mean dissolved oxygen…
According to U.S. government statistics, mononucleosis (mono) is four times more common among college students than the rest of the population. Blood tests for the disease are not 100% accurate. Assume that the following table of data was obtained regarding students who came to a certain school's health center complaining of tiredness, a sore throat, and slight fever. Has Mono Doesn't Have Mono Totals Positive Blood Test 19 44 63 Negative Blood Test 46 29 75 Totals 65 73 138 If a student is selected from this group, find the probability that the test is positive, given that the student has mono.
A clinical trial is run to assess the efficacy of a new drug to reduce high blood pressure. Patients with a diagnosis of hypertension (high blood pressure) are recruited to participate in the trial and randomized to receive either the new drug or placebo. Participants take the assigned drug for 12 weeks and their blood pressure status is recorded. At the end of the trial, participants are classified as still having hypertension or not. The data are shown here:Group Number Randomized Number of Hypertension at 12 WeeksPlacebo 50 18New Drug 50 30 What is the prevalence of hypertension at the end of the trial?A)48%B)18%C)30%D)12%
A clinical trial is run to assess the efficacy of a new drug to reduce high blood pressure. Patients with a diagnosis of hypertension (high blood pressure) are recruited to participate in the trial and randomized to receive either the new drug or placebo. Participants take the assigned drug for 12 weeks and their blood pressure status is recorded. At the end of the trial, participants are classified as still having hypertension or not. The data are shown here:Group Number Randomized Number of Hypertension at 12 WeeksPlacebo 50 18New Drug 50 30
The data given below are measurements (in micrometer units) of the thorax length of the aphid, Pemphigus populitransversus. The aphids were collected in 6 galls on the cottonwood, Populus deltoides. Four alate (winged) aphids were randomly selected from each gall and measured. The alate aphids of each gall are mostly isogenic (identical twins), being decended parthenogenetically from one stem mother. Thus, any variance within galls should be due to environment only. Variance among different galls may be due to differences in genotype and also to environmental differences among galls. Do a one-way ANOVA to test whether there significant intergall variance. Gall No. Replicate No. 1 2 3 4 5 6 1 4.4 5.7 6.2 5.1 6.1 6.2 2 4.9 5.1 5.1 6 6 6.2 3 4.7 5.8 6.1 5.8 5.7 5.3 4 4.8 5.5 5.3 5.9 6 6.3 Average 4.70 5.53 5.68 5.70 5.95 6.00 Ho: Ha: T stat: df: P: Conclusion relative to hypothesis
A clinical trial is run to assess the efficacy of a new drug to reduce high blood pressure. Patients with a diagnosis of hypertension (high blood pressure) are recruited to participate in the trial and randomized to receive either the new drug or placebo. Participants take the assigned drug for 12 weeks and their blood pressure status is recorded. At the end of the trial, participants are classified as still having hypertension or not. The data are shown here: Group Number Randomized Number of Hypertension at 12 Weeks Placebo 50 18 New Drug 50 30 What is the prevalence of hypertension at the end of the trial? 48% 18% 30% 12%
The data given below are measurements (in micrometer units) of the thorax length of the aphid, Pemphigus populitransversus. The aphids were collected in 6 galls on the cottonwood, Populus deltoides. Four alate (winged) aphids were randomly selected from each gall and measured. The alate aphids of each gall are mostly isogenic (identical twins), being decended parthenogenetically from one stem mother. Thus, any variance within galls should be due to environment only. Variance among different galls may be due to differences in genotype and also to environmental differences among galls. Do a one-way ANOVA to test whether there significant intergall variance. Gall No. Replicate No. 1 2 3 4 5 6 1 4.4 5.7 6.2 5.1 6.1 6.2 2 4.9 5.1 5.1 6 6 6.2 3 4.7 5.8 6.1 5.8 5.7 5.3 4 4.8 5.5 5.3 5.9 6 6.3 Average 4.70 5.53 5.68 5.70 5.95 6.00 I am having a hard time wording my Ho and Ha, as well as finding ts, df, and P. How do I do this using excel?
A forester wanted to survey spruce trees on one face of a mountain in order to determine the percentage of spruce trees that were infested or were attacked by a very destructive insect known as the tomentosus. The forester obtained a map of the mountain and then subdivided the area of interest into 400 square grids with each square covering an area of 100 square metres. A simple random sample of 50 squares was selected, and for each selected square, the survey team determined the total number of spruce trees and the number of such trees that were infested or had been attacked by the tomentosus. What sampling design was used for this survey? If the tomentosus is believed to be evenly distributed throughout the face of this mountain, would you recommend this sampling design? Why or why not? If the tomentosus prefers to reside in regions of the mountain face with higher temperatures and hence lower elevations, would you recommend using a different sampling design? Explain your answer…
In the December 2002 issue of Consumer Reports, Consumers Union reported on their investigation of the presence of bacteria in packages of chicken sold in supermarkets. They purchased both name brand (Perdue) and store brand chicken in 25 U.S. cities. Laboratory tests found campylobacter contamination in 33% of the 75 Perdue packages, and in 45% of the 75 store brand packages. They also found campylobacter in 56% of 75 Tyson brand packages. Does this indicate that shoppers would be safer buying the name brand product? Hypotheses: Model: Mechanics: Conclusion:

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