A study involving 5 patients showed that 40% of the population has type O+ blood. Assume that the study maybe modeled by a probability experiment. Let x random variable that represents the possible number of patients that have type O+.
A. In words describe the success and failure for this experiment.
Success=
Failure=
B. What is the probability that exactly 2 patients will have type O+ blood?
C. What is the probability that none of the patients will have type O+ blood?
D. what is the probability that fewer than 3 patients will have type O+ blood?
E. Find the mean, variance, and standard deviation.
In: Statistics and Probability
In March last year, Goldman Sachs relaxed its dress code, allowing its bankers to swap their bespoke suits for a more casual look. As the CEO of a large financial services company in South Africa, you wonder whether relaxing your existing dress code will result in an improvement in employee morale. To answer your question, you would like to conduct an experiment. Write an essay in which you discuss how you would go about conducting the experiment.
Structure you essay using the following headings: Design Participants Procedure Maximum 600 words.
In: Operations Management
The experiment is about whether the concentration of sodium bicarbonate will have an effect or not on the rate of photosynthesis in spinach by recording the time taken by the leaf disks to float in the sodium bicarbonate solution with different concentrations (0.7% and 1.5%) as treatment groups and the distilled water as the control group.
Is it possible for leaf disks to float in thecontrol group (Distilled water)?
Why do you think the leaf disks floated at different times in your trial run?
What are the potential sources of error? How will you troubleshoot these when running your experiment?
On what basis will you determine the number of replicates to be used?
In: Biology
In March last year, Goldman Sachs relaxed its dress code, allowing its bankers to swap their bespoke suits for a more casual look. As the CEO of a large financial services company in South Africa, you wonder whether relaxing your existing dress code will result in an improvement in employee morale. To answer your question, you would like to conduct an experiment. Write an essay in which you discuss how you would go about conducting the experiment.
Structure you essay using the following headings: Design Participants Procedure Maximum 600 words.
In: Operations Management
The experiment is about whether the concentration of sodium bicarbonate will have an effect or not on the rate of photosynthesis in spinach by recording the time taken by the leaf disks to float in the sodium bicarbonate solution with different concentrations (0.7% and 1.5%) as treatment groups and the distilled water as the control group.
Is it possible for leaf disks to float in thecontrol group (Distilled water)?
Why do you think the leaf disks floated at different times in your trial run?
What are the potential sources of error? How will you troubleshoot these when running your experiment?
On what basis will you determine the number of replicates to be used?
In: Biology
In March last year, Goldman Sachs relaxed its dress code, allowing its bankers to swap their bespoke suits for a more casual look. As the CEO of a large financial services company in South Africa, you wonder whether relaxing your existing dress code will result in an improvement in employee morale. To answer your question, you would like to conduct an experiment. Write an essay in which you discuss how you would go about conducting the experiment.
Structure you essay using the following headings: Design Participants Procedure Maximum 600 words.
In: Operations Management
What is the reaction A(g) + B(g) + C(g)------------> D(g) Experiment Initial [A] (mol/L) Initial [B] (mol/L) Initial [C] (mol/L) Initial rate (M/s) 1 0.0500 0.0500 0.0100 6.25*^(-3) 2 0.1000 0.0500 0.0100 1.25*^(-2) 3 0.1000 0.1000 0.0100 5*10^(-2) 4 0.0500 0.0500 0.0200 6.25*10^(-3)
1) What is the order with respect to each reactant?
2) Write the rate law
3) Calculate K (using the data from experiment 1)
In: Chemistry
1. Describe one of the theories presented (such as the law of effect, conditioned reflexes, reinforcement, associated reflexes) to use in an experiment that you will design.
2. How does your chosen theory show roots in mechanism?
3. Take on the role of a behaviorist and pretend that you want to train a behavior into a dog or rabbit, such as laying down when they hear a buzzer, or coming to you when you wear a red shirt. Describe the desired behavior. Design an experiment in which you use this theory to train the behavior into your subject. Try to think more creatively than simply rewarding the animal for engaging in the behavior.
In: Psychology
Who hasn't heard about the double-slit experiment? It figures in any book of quantum physics. But there is something no one can explain to me : I understand why the light cannot be described only as a wave, but I do not understand why it cannot be explained only in terms of a particle, having some trajectory, following other laws of phyisics we may not know. Usually, every book in which I have tried to look for an answer considers that if it cannot be described as a classical trajectory (which is clearly the case in this experiment), then it is not a particle, that is, a material point. Could it not be a particle following new laws?
In: Physics
A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 246246 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related?
| Vaccination Status | Diseased | Not Diseased | Total |
|---|---|---|---|
| Vaccinated | 60 | 55 | 115 |
| Not Vaccinated | 70 | 61 | 131 |
| Total | 130 | 116 | 246 |
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Question: A new vaccination is being used in a laboratory experiment to investigate whether it is effective...
A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 246246 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related?
| Vaccination Status | Diseased | Not Diseased | Total |
|---|---|---|---|
| Vaccinated | 60 | 55 | 115 |
| Not Vaccinated | 70 | 61 | 131 |
| Total | 130 | 116 | 246 |
A. State the null and alternate hypothesis.
B. Find the expected value for the number of subjects who are
vaccinated and are diseased.
C. Find the expected value for the number of subjects who are not
vaccinated and are not diseased.
D. Find the value of the test statistic.
E. Find the critical value of the test at the 0.01 level of
significance.
F. Make the decision to reject or fail to reject the null
hypothesis at the 0.01 level of significance.
G. State the conclusion of the hypothesis test at the 0.01 level of
significance.
In: Statistics and Probability