Questions
Luis Suarez is a soccer player with a barely controllable hunger for human flesh. He has,...

Luis Suarez is a soccer player with a barely controllable hunger for human flesh. He has, numerous times, bitten an opposing player during a game. If he bites someone again, he will be banned from playing. In any game, the probability he bites an opponent is 0.15. Let the random variable B be the the number of games from now until Luis Suarez bites an opponent, and is subsequently suspended. a) Write out the probability mass function for B. b) What is the probability that Luis bites someone in the fourth game from now? c) If Luis promises not to bite anyone in the next six games, what is the probability that he will last more than 10 games without biting an opponent?

In: Statistics and Probability

Wrap up this semester course and what you have learned in this course Human Services and...

Wrap up this semester course and what you have learned in this course Human Services and Helping Process

  • Module 1- Are the Helping Professions for You?
  • Module 2: The Helper – Professional Identity  
  • Module 3: Understanding Diversity. Self-Reflection Paper Due.
  • Module 4: Concerns of Beginning Helpers
  • Module 5: The Helping   Process. First Study Journal Due (Modules 1-5)
  • Module 6: Applying Theory to Practice
  • Module 7: Ethical and    Legal    Issues. Case Study Assignment Due
  • Module 8: Managing Boundary Issues. Agency Contact Identified for Final Due.
  • Module 9: Working with Groups & in the Community  
  • Module 10: Stress, Burnout and    Self Care. Agency Report Due
  • Module 11: Managing Crisis. Final Study Journal Due (Modules 6-11)
  • Module 12: Wrap up! You made it!

In: Psychology

The human eye is most sensitive over the same wavelength range at which the Sun emits...

The human eye is most sensitive over the same wavelength range at which the Sun emits the greatest intensity of radiation. The Sun is a G-type star; see Table 17.1 in Section 17.2 for this classification scheme.

Suppose creatures were to evolve on a planet orbiting a star somewhat hotter than the Sun, let’s say an average F-type star. Let’s also assume that the atmospheric properties of their planet are the same as we find on earth today. To what wavelength ranges, approximately, do you think their vision would most likely be sensitive to? Explain your reasoning. For full credit, you should explore at least one resource besides your textbook. Be sure to cite references used.

In: Physics

In 1940, two researchers named Weiner and Landsteiner discovered that about 85% of the human population...

In 1940, two researchers named Weiner and Landsteiner discovered that about 85% of the human population sampled possessed a blood cell protein called the Rh factor (D antigen). The presence of Rh factor was labeled Rh positive (Rh+) and was found to be dominant over the absence of the blood factor (Rh–). Rh factor is inherited in a typical Mendelian pattern. Based on this information, one could predict that two Rh+ parents could never have an Rh– child. Is it true? Write a descriptive explanation.

In: Biology

1) If you are a human resources manager and you randomly selected 5 job candidates to...

1) If you are a human resources manager and you randomly selected 5 job candidates to interview out of hundreds of equally-qualified candidates that applied for a job without replacement, what would be the standard error of the mean if the standard deviation is 1?

2) The U.S. Census Bureau announced that the population mean sales of houses was $322,100. Assume that the standard deviation of the prices is $90,000. If you select a sample size of 100, what’s the cumulative probability that the sample mean will be less than $346,000 for all possible house samples? (Tip: First find the Z value, then find the cumulative probability to determine the percentage)

What’s the cumulative probability according to the Z-table?

3) A survey manager wishes to find out the sample size that is needed at a particular confidence level. If the manager finds out that the ? = 20, what sample size is needed to estimate the mean within +/-5 with 95% (1.96) confidence?

In: Statistics and Probability

Digital Privacy Essay Background In your textbook, the authors endorse privacy as a human right but...

Digital Privacy Essay
Background

In your textbook, the authors endorse privacy as a human right but also challenge its ability to maintain integrity and safety with the constant adoption and advancement of technologies.
Instructions

On this essay, you should analyse the future outlook of digital privacy, including topics such as personal

information and online security, based on academic resources and past real-life events. Whether you choose to write from an individual, organization or government perspective, consider positive and negative impacts and their consequences to the digital society.

Examples for topics would include privacy issues with maintaining a personal Facebook account, the deliberate release of sensitive information by WikiLeaks or even the espionage handled by the USA government on specific countries and organisations

In: Operations Management

4.Malaria is the deadliest human disease caused by any eukaryote, and as such, malaria parasites have...

4.Malaria is the deadliest human disease caused by any eukaryote, and as such, malaria parasites have profoundly affected human evolution and greatly impact the behaviour of modern humans.

a.Consider the allele for haemoglobin S (HbS), which is the altered haemoglobin molecule that results in sickle-cell anaemia when an individual is homozygous for the allele (HbSS).  Why does the allele for HbS persist in populations that live in regions where Plasmodium falciparum is prevalent?

Because the Plas

b.Which specific protein is at a very low frequency in populations of humans living in regions endemic for Plasmodium vivax (1 mark), and why is absence of the allele for this protein beneficial in terms of resistance to this parasite (1 mark)?

c.If malaria were globally eradicated next year, how would the frequency of the allele that codes for haemoglobin S, and the frequency of the allele that codes for that specific protein you mentioned in part b above, likely change over evolutionary time in areas that were formerly endemic for malaria?

HbS allele:

Allele that codes for protein mentioned in part b above:

d.Much optimism flows from the recent observation that bed nets are dramatically decreasing malaria prevalence in endemic regions of the world, especially Africa.  However, consider an individual living in a region endemic for malaria who has spent every evening of her first 19 years under a bed net.  On the day of her 19th birthday, the individual consumes too much beer at her friend’s house, forgets to apply insect repellent, and is now staggering home late at night.  What is one disadvantage of using bed nets as a means of avoiding P. falciparum-infected mosquitoes?

5.Coccidia are parasites of vertebrate mammals, and can be divided by life cycle into one-host coccidia, where all developmental stages occur in one host before oocysts are passed into the environment, and two-host coccidia, where parasites have exploited ecological features of predator and prey.

a.There are seven species of Eimeria that infect chickens, including the species that we covered in lecture, Eimeria tenella.  Why do you think that there are so many species of parasites in just one species of bird?

b.With regard to the infectiveness of oocysts of Cryptosporidium parvum and Cyclospora cayetanensis when they leave their host, what is the primary difference in the transmission of each species to another host?

c.Why do you think that a two-host coccidian such as Toxoplasma species evolved the requirement of an intermediate host, such as a mouse?

d.Felines are the definitive hosts for Toxoplasma species, and are the only hosts in which intestinal development of the parasite occurs.  However, development of Toxoplasma species, with resultant formation of cysts in the brain and muscles, occurs in felines as well.  Why do you think that Toxoplasma species develop tissue stages in felines?

e.You are a cattle farmer who owns five dogs.  Your herd of cattle is infected with an apicomplexan parasite, which is causing them to abort their calves at an alarming rate.  Your neighbour, Daxette Bärnstörmer, owns a cattle farm but does not have this problem, and you have noticed that she does not own any dogs.  What is the genus name of this parasite (1 mark), and how might you ensure that your cattle do not become infected with this parasite in the future (1 mark)?

9.Male gametocytes of malaria parasites differentiate in the midgut of mosquitoes to each form exactly eight male gametes.  What would you predict as the sex ratio of female gametocytes to male gametocytes in the bloodstream of humans?

A.silly Todd, gametocytes are not found in human blood!

B.there would be many more female gametocytes than male gametocytes

C.there would be equal numbers of female gametocytes and male gametocytes

D.there would be many fewer female gametocytes than male gametocytes

In: Biology

A sample of human brain volumes ​(cm3​) is given below. Use the given data values to...

A sample of human brain volumes ​(cm3​) is given below. Use the given data values to identify the corresponding z scores that are used for a normal quantile​ plot, then identify the coordinates of each point in the normal quantile plot. Construct the normal quantile​ plot, then determine whether the data appear to be from a population with a normal distribution.

1045

1417

1042

1079

1077

1079

1062

961

List the z scores for the normal quantile plot.

In: Statistics and Probability

A sample of human brain volumes ​(cm3​) is given below. Use the given data values to...

A sample of human brain volumes ​(cm3​) is given below. Use the given data values to identify the corresponding z scores that are used for a normal quantile​ plot, then identify the coordinates of each point in the normal quantile plot. Construct the normal quantile​ plot, then determine whether the data appear to be from a population with a normal distribution.

1045

1417

1042

1079

1077

1079

1062

961

List the z scores for the normal quantile plot.

In: Statistics and Probability

Lester Hollar is vice president for human resources for a large manufacturing company. In recent years,...

Lester Hollar is vice president for human resources for a large manufacturing company. In recent years, he has noticed an increase in absenteeism that he thinks is related to the general health of the employees. Four years ago, in an attempt to improve the situation, he began a fitness program in which employees exercise during their lunch hour. To evaluate the program, he selected a random sample of eight participants and found the number of days each was absent in the six months before the exercise program began and in the last six months following the exercise program. Below are the results.

Employee Before After
1 6       3      
2 6       2      
3 7       1      
4 7       2      
5 4       2      
6 6       6      
7 6       3      
8 6       7      

At the 0.10 significance level, can he conclude that the number of absences has declined? Hint: For the calculations, assume the "Before" data as the first sample.

Reject H0 if t >  . (Round your answer to 3 decimal places.)
The test statistic is   . (Round your answer to 3 decimal places.)
The p-value is  (Click to select)  between 0.005 and 0.01  between 0.0005 and 0.005  between 0.01 and 0.05  .
Decision:  (Click to select)  Reject  Do not reject  H0.

In: Statistics and Probability